User blog comment:SethHeartphilia/Whos stronger Erza or Mirajane/@comment-15245211-20130812085439

I think Erza is as strong as Mira. a Erza often showed her true magic defense even if without waering high defense armor. Erza so many times showed her awareness to opponent.

Erza has showed fear and amazement about Mirajane, but Mirajane has it too about Erza.