I'm a little bummed that I'll have to play it on PC (not by much, since my PC is "comfy couch" enabled), mostly because their excuse is trash. They are not making a game that won't run on Wii U (or X360/PS3, for that matter).
They are using UE4. Wii U, Xbox 360 and PS3 aren't supported by UE4. It's quite simple, really.