User blog comment:SethHeartphilia/Whos stronger Erza or Mirajane/@comment-177.107.9.70-20150630231649

We do not know. The characters are not reals but strongs! Hiro M. can make them weak too. I would say Mirajane has not just three demons, she is not a human like Erza and Lucy, she can turn in a monster and lost the control like Elfman. I know she has a nice control. Erza is smarter not faster as Mira. Erza is a human, Mira is a demon.