My money's on Nintendo this year. The shit the bed last time around, but I think they learned a thing or two about presentation. They've also kept their cards close to their vest so game reveals aren't ruined. They have the marquee game that everyone will be talking about (good or bad) in Zelda U, and if they back that up with a couple new IP's, some updates on X and other known titles and a few fun things like Pokken Fighters and/or 3rd party games (such as COD:AW coming to Wii U) then it's their's to win. A bold move such as a new, good looking Metroid could seal the deal.
I also think Sony and MS have blown their load a bit early on some announcements, and they also seem to have a lack of titles ready for 2014. They may surprise with some awesome stuff but I sense Nintendo has the biggest, most interesting lineup. They are also the most desperate.
