I will be buying a WiiU purely for the inevitable Zelda release. That Zombie game M.C posted looks pretty awesome too.
I don't reckon there's any point comparing graphics of Nintendo's consoles to other next gen consoles. People buy Nintendo consoles either for their kids or to enjoy great Nintendo exclusives that they grew up with (Zelda, Donkey Kong, Mario, etc)
Wii also is the best Co'op system.
I love playing the nintendo games with a bunch of friends. Its the most fun i have playing games.