It's already proven something's gone down between them as they've said frostbite 2 barely works on wii U (a downright lie as both 360 and ps3 run that fine and cryengine 3 apparently fully supports wii u and from what I know that can barely run on a ps3 or 360) and that frostbite 3 will not support the console.
The reason most other companies are avoiding it is becuase of the player base being too small at the time which is understandable, but it is annoying and worrying people seem to think the wii u's player base was gonna rival the wii's and theyre kidding themselves if they think the ps4 or xbox 720(I refuse to call it infinity) are gonna fly of the shelves and have a giant player base from day one.
I'm wondering if were gonna see this loop for all the new consoles player base starts small devs avoid console no games= barely any sales. That's why I think xbox has to get off they're ass with a few new i.p's mainly first party games sell a console in it's first year and xbox has nothing.
Edit:Also most of them games listed have been in development for a while no point in porting to the wii u and the fuse devs have said they're open to porting it, and i'mpretty sure obsidian are in a bit of money trouble so why would they spend time and money to port south park to a new console.