Tough call. I don't think we have enough information yet, particularly about the 2014 lineups for each console.
PS4 will have good momentum in the first few months, but after that? They don't have a whole lot announced yet; I expect they have more, but what will be their holiday killer app? They do have a price advantage over Microsoft, of course, and I don't expect the X1 price to drop until at least 2015. That may be the ace up their sleeve if they can't come up with a game that can move as many units as Halo can.
Xbox One won't have as much momentum as Sony coming into 2014, but there's no question they have a lot of exclusive games coming out for the console, including their heaviest hitter, Halo (a franchise that routinely sells more than anything Sony puts out). Will that be enough to overcome their price disadvantage and reverse the tide in the second half of the year? I'm not sure, though I expect they will do fine for themselves regardless of whether they catch up to Sony or not.
Wii U will likely get a price cut, and combined with Mario Kart, Mario 3D World, and Smash Bros, they should definitely see a nice bump in sales. Problem is, they've dug themselves a VERY deep hole, and it remains to be seen how effective their traditional franchises are going to be in moving Wii U hardware. In short, improvement is practically guaranteed, but how much, and will it be enough to catch up to the PS4 and Xbox One? I doubt it, but far crazier things have happened.
Too many questions.
