User blog comment:SethHeartphilia/Whos stronger Erza or Mirajane/@comment-26461051-20150607045403/@comment-26461051-20150611071905

Yes, and Mira can only control Darkness (and cause explosions) in her transformations (Mira's satan souls = Erza's armours)...

Also, Erza has some degree of telekinetic powers (she can control her weapons using this, and no, Mira has NEVER displayed the same ability); plus armour that increases her speed, armour that can block powerful attacks, and at least two different armours that increase her own attack power. Not only that, but she is also very skilled at summoning and using a wide variety of weapons. As seen in her fight against the 100 monsters in the Pandemonium contest, Erza can combine her armours and weapons to create effective elemental combinations (defending against one element while attacking with another), or using the strengths of her different armours (ex. Flight armour = speed/mobility, adamantine armour = defense/durability) in situations when they are needed, than quickly switching into a different set of armour when another situation/opponent approaches. Like it or not, that's what Erza's magic is all about; just like Mira relies on her transformations, Erza relies on her weapons and armour. Both are powerful wizards, but like I said earlier, Mira's magic is more offence oriented (she barely uses her sleep magic, anyways), while Erza is more defence and strategy focused...