The official reason for Crysis 3’s absence on Wii U has been revealed. It's not due to lack of horsepower or technical reason, but pure lack of demand.
"There has been discussions between Nintendo and EA and Crytek, but the bottom line is that there's not enough business drive in it," Crytek CEO Cevat Yerli told Digital Spy.
Truth be told, it makes perfect sense. When you think of the Crysis series, you think of high end PCs and bleeding edge graphics, which Nintendo isn’t exactly known for. Combine that with the lack of any legitimate FPS experience on a Nintendo console before the Wii U, and you can easily see why there's no demand.
A Wii U game is in development using CryEngine 3, but not from Crytek. This puts the nail into the coffin of any sort of "just kidding, here's Crysis 3" scenario.