Holy defensiveness, Batman. The developer was being honest and said something pretty damn innocuous, so why are people ready to have him lynched? All he's really saying is that the computational distribution needs to be different on the Wii U for optimal operation, it's not like he said the console sucks. Also, he's not talking about graphics in this instance, but performance, which is a heck of a lot more important, at least to me. The way people are ready to attack anyone who offers even the smallest bit of negative information about the Wii U is crazy.
No, it's not the greatest news in the world, and it's something that could possibly hurt the Wii U in a few years if it's true, but it's also not necessarily the worst news in the world, either. Regardless, while it might give you pause if looking to buy a machine that will match up with the PS4/720, it's something that will hardly matter if you're a Nintendo fan.