User blog comment:MiraMajin/Elfman's True Power/@comment-5620199-20140224000558/@comment-7418318-20140224181716

I can see where that thought might be coming from, but I doubt Mira was able to fight her brother seriously, if she was able to fight him at all.

A Take-Over seems to be taking on the characteristics of the target creature for sure, but we don't know if it's power is also accessed and even if it is, if the mage gains access to the full power or just a part of it.

Also being beaten and forced into something like hibernation inside a Human body, could very well result in the beast being greatly weakened, compared to how it was when it was roaming free.