PS4, Xbox, then Wii U.
Regardless of anything else, the PS4 and Xbox One are going to have most of the good multiconsole titles. Games like The Division, Mirror's Edge 2, etc, aren't coming to the Wii U and by some chance they do, which I doubt as there was no announcement of the Wii U for either game, it'll be a severely gimped version.
The Wii U isn't going to sell like the Nintendo fans think it will. The majority of those non gamers that bought the Wii aren't going to get the WIi U. They're not gamers, and to them, the Wii was just a fad that they had to partake in. More than likely the first system they've owned since the NES.
PS4 is going to beat Xbox One in sales because most people going into the next gen want the more affordable entry and most of the games that anyone is going to care about are multiconsole, so your choice is a few of these exclusives or a few of these exclusives, or what system do they think will have better exclusives as time goes on. If anything, the year head start that the 360 had, the much lower price point, the far better games for the first year, and the PS3 still passes the system in sales, it kind of proves that the Playstation is a bigger name and now that they're on equal footing this gen is going to be a completely different story.
I'll guess that the PS4 is going to have atleast 10 million in 2014, Xbox One will have eight million, and Wii U will have seven million.







