Unless 3D World pulls it off, the PS4 will outsell Wii U easy. As much as I love Nintendo, I also love PS. But, Nintendo is sabotaging themselves. They can't advertise the Wii U to save their butt, the games are slow to come out due to them being inexperienced in HD development, and the GamePad is causing confusion all around the table... to Nintendo too.
However, Nintendo CLAIMS that the new Zelda (coming out in 3005) will use the GamePad in miraculous ways besides stopping enemies. Anyway, Nintendo will find their audience and with Smash and MK8 coming next year Wii U should find its way out of media's harsh articles and bashings. ONLY if Nintendo does the right things that is. Nostalgia isn't going to save U this time around... the games will. Still, PS4 should take top spot unless Nintendo pulls a miracle.