Regarding Tartarus I think Seliah was one of the strongest demons on par with Kyoka before Kyoka got an amp from Seliah power.
as far as i can get from manga, she was her subordinate, not her equal.
Seilah was not much weaker than Kyoka and even then Erza had a less believable win. Both Erza and Mira paralleled one another throughout that entire arc. That is when they were called the most reliable duo, that's when they both had equal portrayal vs Tartaros soldiers (mirrored panels) that's when they both escaped at the same time, that's when they both took on Kyoka and Seilah in their weaker forms and thought both were strong, that's when they both had their peaks Sitri/Armadura destroyed by Seilah and Kyoka's etherious and that's when Mira had to go beyond her takeover limits to take over macro and command elfman to beat Seilah/Erza's will power pushed her beyond her limits to develop something akin to a 6th sense. Mira also saved Erza from Seilah in that arc. Tartaros was the actual arc their parity was shown. Seilah and Kyoka were a duo and lovers going up against FT's most reliable duo S class women.
but they werent duo, kyoka was leader, and only one near her was silver. and then absorbed Seilah as well, then erza bs win lol
Vs Azuma she came to the same conclusion Erza did i.e. if i put all my power into attack i can beat him however Mira decided to save Lisanna and then Erza got Jellal's mental call and the guild's magic turned against Azuma and helped her win. The fact that she was matching and hurting Azuma with BSS and only got crucial hits when Lisanna distracted her was proof that she would win normally with Sitri. It was also paralelled that Erza couldn't use Armadura as it was damaged and Mira couldn't use Sitri as she didn't have the required magical power. This showed that BSS Mira was on the same level as heavens wheel/black wing/flight armor/giant armor/adamantine armored Erza.
two things happened in this arc.
1) the test, which showed every single s class can handle what laxus handled in in ff arc. markarov clearly told s class mages to hold back. and obviously he couldnt have predicted that natsu and gajeel wont team up and end up facing Mira.
My conclusion: Mishma believes that Mira could perform similiar to laxus (ff arc)
2) Azuma: Mira faced a different Azuma than erza. Azuma ranks solid laxus tier. he low diffed pantherlily, who in the very previous arc, stalemated gajeel. But Mira said she was low on power. Might have something to do with the her break, but still that is red flag there
erza fought much stronger Azuma, because of two factors (i) erza fought him in giant tree (Azuma magic was Lost Tree magic), vs Mira, he stood near the forest. (ii) Azuma had access to fairy tail powers. no matter how you think the fight went, Azuma at the end had to rely on Tera Clemare (fairy power held by azuma, this is equivalent to what Erza did with Motherglare now), without it, he seems to have no way of putting erza down. Azuma first Tera Clemare knocked erza straight out, then erza bs, then next Tera Clemare made erza give up her family and accept death, then erza bs
in simpler words
Azuma beat Mira
Advantaged Azuma lost to bs Erza
so, i would hard press to believe Mira feats with this. I blame Mishma for Mira lack of panels
Both Erza and Mira could not and did not beat full powered spriggan on their own. Even Irene decided to kill herself.
Erza could, that is why Marin was essential for Ajeel. Erza vs Ajeel fight is more close to Laxus vs Wahl with 90% of erza arsenal useless
Irene was far stronger, even then erza over powered dragon irene strongest on screen move, and blasted ROT aconlogia across the sky. This erza has better feats than even gildarts
Meanwhile Mira was left with those swords and blind and transport less jacob (atleast Mira also didnt transform for this jacob, so one can claim Mira might be above normal springgan)
100 years quest totally sealed the deal for Mira, fans just choose to focus on fights/arcs when Mira is absent. Mira tied with Skullion in her weakest form while Erza with Benizakura and clear heart form couldn't beat Kyria. BSS is Mira's weakest original form while clear heart +benizakura is Erza's original offensive ace. To beat Kyria Erza had to use a new power i.e. enchanted blades. People focus on Erza vs Laxus but forget what happened when Mira and Erza had to fight opponents from the same group and one can argue Skullion is stronger than Kyria since he low diffed DES Gray and she was matched by star dress mix spells from Lucy while Madmole was matched by Elfman. When you compare Mira fighting the same type of opponents as Erza in 100 years quest, Mira shines.
Laxus also low diffed all of the trio and Erza was overpowering Kyria with her enchantments and then tied with Laxus using them. This just supports that Mira using a higher form than BSS would've allowed her to match Laxus and that version of Erza since Alegria is doing so right now with the strongest versions of Erza and Laxus.
Funny how Erza was unserious for Kyria but Mira was serious for Skullion lol. Mira used her weakest form while Erza used her peak offensive form then used an enchantment but Mira was the serious one. Fact is both were serious but limited by plot/ Mashima the dragon eaters were the newest threats. When the BDSK became the new threats the trio were powercrept. Erza was shocked that Laxus beat Kyria and called the strong twice.
here i would agree with you 100% but unfortunately, i have been following fairy tail for a long time. erza is used as hype tool most of the time and then she gets redeemed by the end of the arc (More panels because erza is main character). Example Erza vs kyria then Erza vs Laxus, or Erza vs Suzaku then Erza vs Misaki or Erza vs Marin then Erza vs Irene. it is standard for erza at this point
Erza moves from lucy tier in the start to Laxus or laxus plus tier at the end.
Mirajane doesnt get this, because she barely gets any panels at all
this is so predictable that we could easily predict erza will redeam herself after ajeel, while rest of the fans here were talking about erza reaching her ceiling (mirrors gmg arc reaction as well). you can check old power level threads for evidence
Also, the argument that Mira is the only one at their peak vs the Calamity Blood dragons falls flat, since Erza used her Irene form and had her slashes blocked and was pushed back by Motherglare. Laxus powered up when he beat Kirin and is now powered by Elexion's soul instead of the lacrima. Alegria Mira is matching Elexion Soul Laxus' reaction time/speed and durability right now. Laxus did not use red lightning to attack but that is not a form that makes him faster/more durable so it's irrelevant if we are talking about what Mira did. Laxus doesn't have forms like Erza and Mira. Laxus defense is usually the same. It's his attack that varies with red lightning. It's a false equivalence to say Mira is in her peak and Laxus is in base. What form does Laxus have to raise his defense? Laxus' red lightning is powered up by him getting hurt ironically enough. Again, this is Laxus powered by Elexion's soul. Mira is using her peak from the original series unlike him and Erza. Mira's durability is also shown to equal him which ironically enough was not the case for Erza in her fight vs Laxus.
Mirajane in alegria threw Scissor Runner from a great distance since they were nowhere near Laxus, and used enough force to have him spin uncontrollably and crash into levia, hurting both dragons in the process. This also saved Laxus from the magic drain. Laxus trading blows with Levia and Erza slashing Motherglare with her Irene form before using the dragonized earth energy do not surpass what Mira did. Mira also just used physical might she hasn't caused any explosions like she did vs Heine and Juliet so even then if Laxus hasn't used thunder dragon king red lightning I can say Mira didn't use her Alegria energy yet either.
what i mean here, if story doesnt now end and this is not the last fights, then erza will get more fights. might not happen for mira because Mishma again. otherwise, this erza move may be her strongest move as well
So while I agree that Mashima doesn't treat Mira well I disagree with people claiming in terms of powerscaling she lacks hype/feats. Erza will always get more however Mira has enough feats/hype especially in 100 years quest for people to get that Mira is on the same level as Erza and even Laxus.
i guess people have different ways of proving things to themselves. i normally start with "i might be wrong", so i always need abnormal evidence for my side vs the opposing