Sony really missed out in their conference with regards Vita. Sure they played Vita/PS3 cross-platform MP for Battle Royale, but we didn't actually get to see it playing on the Vita to emphasize this. Then there's the PS1 classics announcement which is nice, but honestly that support should have been there at launch. Also, they only showed a logo for the CoD on Vita and that leaves just the trailer for the AC game. That's a seriously lacking focus and it was in the middle of the conference so it will go forgottened by many viewers. Plus, based on previous handheld games I can imagine that both CoD and AC will be half-assed iterations of those respective franchises. Sony might have some serious trouble with the Vita if sales don't pick up and I'm not sure why they would at this point.
Food for thought: Shove an apple in your brain