How is it irrelevant? This is also not potential either as she is stated by Erza to have taught her how to do these things. Who said she enchanted Erza with the 6DS? Wendy enchanted 6DS powers into Natsu and taught Erza how to enchant their magic into her swords. Wendy can do all that on top of stat buffs, relieve fatigue, and healing. It's a no brainer that Wendy's enchantments are better.
Sting, and Gajeel, both who beat an S12, operate on the same level as Wendy????

There's a difference as it is noted when some gets enchanted to make the difference. I can for sure compare Dragonizied Nebal bcs Nebal beat the crap out of Wendy B who beat the crap out of Erza who is equal to Laxus. She did go for an all out strike and got sent packing. Irene then was toying with her after that and it's not like Irene had any trouble keeping up with Erza. But Ajeel isn't top 3 S12 lol. I'm just saying, you said she is miles above the S12 and she is really not as shown in her fight against Ajeel. There are other S12s besides Ajeel who can finish the fight in one blow against Erza. The S12 are still up there in power scaling.
And what does that have to do with her Blumen Blatt failing against Irene? Her Blumen Blatt still stalemated Raiko yet was utterly useless against Irene. Wendy B is stronger than Erza lol. Erza literally tries to attack and gets sent flying with a kick that puts Erza on her knees.
Wendy then puts her into the dirt continously and was going to majorly damage Erza had it not been for Wendy's Deus Corona.
She went in between a bloodlusted Gray and enraged Natsu attack minutes prior lol. She was hyped on the PoF juice the entire time. She was thinking about Makarov prior to the fight. She also didn't get pissed or nakama flashbacks when she busted the meteor nor did she get them against when she knocked RoT Acno out of the sky (which is a definite PoF feat). Erza didn't even hold back in her intial strike and got kicked in the gut and proceeded to be on her knees for most of the fight lol. She then almost gets wrecked for good had it not been for Irene Marvell lol.
It does as Wendy B was smashing Erza. How would Wendy B be able to hurt Erza if she was not on her level in the first place? She literally beat her up physical and magically to the point Erza is screaming out in pain and is in a fetal position from the attack.
Because the separation enchantment had nothing to do with Irene using Wendy's latent potential to become Wendy B. The residual power of the enchantment has more MP than Wendy B bcs the enchantment comes from Human Irene's residual magical power and Irene's magical power is far stronger than Wendy's (even with her potential released).
Irene immobilized Erza. If she was bloodlusted then she would have just killed Erza with that attack. Irene sits there for the rest of the fight and lets Erza hit her. How does that say she is bloodlusted when she just sat there and let Erza bust the meteor and hurt her? It was then stated that Irene could not kill Erza which means she held back. You can't hold back when you're bloodlusted lol.
It does give her credit since that entire army would have been destroyed by her and she did that casually. She also saw Makarov take out 80% of the forces and said those beserkers being off the battlefield changed nothing which meant she thought of them as still fodder lol. She terraformed an entire country with ease. 2 million fodder she casually enchanted would be child's play for her to destroy. Wendy also is stronger than the fodder she has enchanted. She would solo Doom and the enchanted fodder of the guild. Her enchanting fodder to reach Erza level is a big feat since that shows the spells she can do and the magical power she has are ridiculous.