User blog comment:IamJakuhoRaikoben/Sorcerer Magazine, Issue 45: September 2015/@comment-25111584-20151003185436/@comment-153.91.238.254-20151004020631

That was before the timeskip bruh I'm pretty sure the power relations between the characters is different now. For example erza was a little bit stronger than natsu before the timeskip and Natsu trained really hard so that he can take down acnologia while erza trained but I highly doubt she trained as hard as natsu and while we havent seen much of erzas abilities after the timeskip I doubt she is stronger than current natsu.