I read somewhere that Sephiroth wasn't fighting at his full potential... which, based on the above statements, could be taken as true (Though given that it was likely his last chance to win as far as he could tell, that could only really count as another knock against him personality wise.) Like I said, In terms of Raw power, Sephiroth wins, but as others have pointed out numerous times ("Cloud has beaten Seph twice.") Raw power doesn't always win battles. I voted for him since I can't use the unknowns like a story writer can. I'm certain that plot would determine the winner of any battle between these five. (which incidentally invalidates my choice of Sephiroth, ironically.)