Its a hard one, technically, it would be
alttp ganon, because as some ppl has said, has both the trident and the triforce (and think about alttp link defeating him without the triforce of courage O.O). I love Alttp a lot, and I love this ganon too
Anyway, I think
ww and tp ganondorfs can do a great fight, they were totally awesome, very skill full fighters
Loz (nes) ganon, well, I dont think so, but is not fair because it was the first design, and it was in the NES, there is not enought to make me think about how would he develop in a fight
I am not sure about
FSA ganon, well, he was BIG, powerful with the trident, and he fought 4 links at the same time O.O, that would be a hard time for any ganon, I think
Oot ganondorf is ok, I like a this ganondorf very much, but for his ganon from, well, to say the true I disagree a lot, he wasnt that great TO ME, he is a way down in my favorite ganons list, for the story he does great, but as a boss I dont like him a lot, I mean, he is slow, cant use magic (as many other ganons, or were all the other ganons?), and the weak point is not really cool for the ultimate monster, the tail
, I think is his aggressive design (to call it someway) is what makes people say its badass (great design, but not MY favorite one, too)
so, I would say Alttp Ganon, but I am not totaly sure
PD : oh, and for Oox ganon, well, I havent..even...played...that game *cries*
EDIT: just spoted the poll, can you PLEASE add the FSA ganon? if not, at least personally, I would be offended