Nintendo won, sure remakes, but remakes/rehashes of games which are actually good.
DK:C = epic, any zelda game (quite objectively mind you) = epic, Kirby = didn't really like that they got rid of the eating people, but it got good early reviews, 3DS = Pretty damn epic (comes with a woman! but in all seriousness if anyone saw the .pdf with the games list
), Mario sports are a ton of fun, so really I reckon they won. (ALSO NO CAMMIE OR VITALITY SENSOR!)
Microsoft was just embarrassing, kinetic looked silly even though it's priced a lot better than move. No interesting new games quite frankly (never really liked halo that much). Another new xbox? Eh who really cares (eats games!).
Sony was just ADS ADS ADS, god that was so boring I pretty much fell asleep, Kevin Butler is kinda meh, and then Marcus or whatever (=more ADS). Move looks silly (I hate motion controls) price is kinda high. Couldn't care in the slightest for any of the games shown, Killzone 2 was supposed to be revolutionary (GOTY!) and quite frankly was pretty shit, and Killzone 3 looks pretty much the same. Oh and not to forget another of their main points, I hate 3D, it gives me headaches and I already have to wear glasses so 2 pairs = fail. (personally don't care about Twisted Metal, didn't look too great IMO but I can't judge that)
Mind you this is coming from someone who has every console, and has played pretty much every game with a sequel announced at this E3.
EDIT: OH and Portal 2 is not exclusive, and will still be best for the glorious PC master race.