Wii U sucks, even for Wii homebrew. Who cares?
Wii is still the king of the Homebrew Hill.
The WiiU's problem is that it doesn't output 240p, which places it firmly in the emulation arena with most every other retro system out there, including the PC Master Race. If I were to buy a WiiU, it would be for the exclusive games, but with it's dinky library, I just never found the motivation to bother.