In the end, who won? Wii U or PS Vita?

[JackHandy]

Wii U was a dedicated home console and the Vita was a dedicated handheld, so they weren't competing. For the Wii U, its competition was the PS4 and Xbone. For the Vita, it was 3DS. The former got its backside handed to it (although I loved mine and easily had the most fun with it out of the three), and the latter as well. So in that context, both were commercial failures.