Whether it works or not, I am pretty sure ArenMook doesn't have a WiiU to test it out on.
I don't know anyone who has a license to compile to WiiU. Have you got one?
I can't see why it wouldn't sort of work. Although what happens when you use things like UIInput, is anyones guess.
If you do have a WiiU license, can you not try out the demo version on it?