Exhausted Mira did better against Azuma then Erza before the PoF hit and he got buffed by the tree lmao. You guys forget Mira only lost bcs she was low on magic and had to prevent Lisanna from dying. She said she couldn't beat him in her exhausted state but seeing how much damage he took from her and how little attacks landed during their battle. Mira had the upper hand. She just didn't have time to take him down before Lisanna kicked the bucket.
Mystogan wasn't Laxus level. He did nothing to Laxus left bcs he thought Erza could handle it lol.