I found this interesting I know what other already said about this but the dev's actually wanted this on this system. as it says here.
Crysis 3 Almost Came To Wii U
News on Mar 02, 2013 at 04:53 PM
According to Crytek's founder, CEO, and president, Cevat Yerli, Crysis 3 was up and running on the Wii U, but a lack of support from Nintendo and Electronic Arts meant it was never going to make it to retail.
It's their publisher that screwed things over. Now we all know the full deal. but the more important thing here is the Wii U can handle the engine crytek made. So no can it can't and that mean others using the same kind of excuse, don't really have one ether.