I get the feeling that game is a port of the PS3/X360 version with some minor gamepad features tacked on.
When 360/PS3's lower specs couldn't handle the game, it bottlenecked the WiiU version's development.
Basically, the 360/PS3 version has to be QA tested before a WiiU port is done. That way they can fix issues once and handle the scope of the game while porting the game as easily as possible.
I predict NX launches in 2017 - not 2016







