Keep telling yourself that. Natsu already debunked you and Mashima himself said he keeps the guild scaling the same.
Again, he said the strongest guys would be in the middle so Mira or Laxus or Jellal would be there.
If Mira is below them then Natsu would exclude her since it would mean the strongest are not in the middle.
And apart from that the authorial intent is clear.
Manga /anime fandom are ridiculous. Natsu doesn't need to literally say Laxus is equal to Mira and Laxus you know?
Lol Erza was struggling with Kyria and thought she was strong. She was shocked Laxus beat her. In her second fight Erza with clear heart and Benizakura was matched then Benizakura was broken so Erza needed her enchantment. This same Erza tied with Laxus and this same Laxus low diffed Kyria.So Mira tying with Skullion in her weakest form says little.
Skullion low diffed DeS Gray then we saw him tie with Mira while Mira was in her weakest form in their first fight. Skullion was above DeS Gray and Kyria was on par with Star Dress Mix Lucy so even then Skullion > Kyria.
Mashima had Erza and Laxus tie in the same arc he teased Laxus vs Jellal and Mira vs Erza AND had Natsu say the strongest enemies would be in the middle so Mira or Laxus or Jellal would be there. But sure it means nothing
This is why you guys are always shocked when Mira is shown stronger than people like Lucy and Gray and keep thinking she would be surpassed. Happened for the GMG, Tartaros, Alvarez and 100 years quest and you guys are still waiting.