I'm fairly meh about both, the only reason I'm getting a Wii U now is the Zelda bundle with the special controller.
I would say the Wii U, it has more games exclusive to the system, Pikmin 3, Mario/Luigi U, Nintendo Land, Smash Bros, Zomi U, and probably a few others.
The games you listed off for the Vita are on other systems, I think.
I have not payed any attention to the Vita though. So i know nothing about it.
I like the Wii U, I played on a friends system, but there is a big lack of games, but there are a few good titles.