User blog comment:Water Dragon Slayer/DREAM BATTLE CHRONICLES: FIRST MATCH!/@comment-5894890-20130716161745/@comment-7418318-20130716163333

Are we even sure that Minerva has a lot of magic power?

Except for that one attack that would have (probably) defeated Erza, if she hadn't requiped into Nakagami armor, her attacks always seemed to be comparetively low powered in comparison with the other mages, like she put in just enough power to get the job done.

This might just be due to her liking efficiency (but then why bother torturing others for fun? That's not efficient at all), or it might be a sign that she'd run out of magic if she used wasteful attacks like Kagura, Erza or Natsu, that leave the surroundings in rubble.

So maybe, just maybe Lucy's got equal magic power to let Gemini copy Minerva. Of course equal magic power doesn't mean equal fighting ability, mind you. Minerva is the better combatant without a doubt, but maybe they have an equal amount of "magical fuel" so to say, which seems to be the requirement for Gemini's ability to copy someone.