Microsoft are good contenders. They have a point to prove, and I'm sure Phil Spencer has been hard at work to make it a great E3. They'll definitely be showcasing some great 3rd party content.
I'd say Sony stand the best chance with the PS4's current momentum. There's a lot of 1st party studios, Naughty Dog in particular, who haven't shown off their work. Let's just hope they keep indie and corporate talk to a minimum.
I can't really see how Nintendo could objectively win this. I'm sure it'll be great if you're a Zelda fan, but they don't seem to have the content nor an actual lengthy conference to stand any chance of winning.








