User blog comment:IamJakuhoRaikoben/Chapter 480: The Northern Gravestone, Review./@comment-100.15.97.117-20160404212919/@comment-5266348-20160405011936

The only times that Minerva fought anywhere close to equally with Erza, is before Erza used second origin, and after Minerva was turned into a demon - a power up she apparently lost after the Tartaros arc.