If we're judging things by how fired up fans got, then Nintendo won clear as day.
However the cautious, second-guessing side of me wants to say that it's close between Nintendo and Sony, because Sony did show some nice stuff, though (though nothing really groundbreaking except a lot of remakes of a lot of games that were otherwise forgotten)
It's no question that Microsoft and EA bombed.
ADD:
Okay, so basically, people are calling Ubisoft on their shitty reasons for not including women in Assassin's Creed Unity multiplayer.
Ubisoft has basically come out and said that "women would be too hard to animate." Cue animators and players alike saying "BULLLLLLSHIT", including Jonathon Cooper, one of the animators for Naughty Dog.