I mean, in a all out battle, who would probably win?

I would say that Eden, Bahamut Fury, Ultima(FF12) and Zodiark would end up left because, I doubt the others can survive planet destructing qualities, but then, who would win?

eden warped reality into a tunnel of chaos for a second, Bahamut fury destroyed the planet...>.>, Ultima I think did that also, Zodiark basically destroyed allot lol.