Kind of a self-fulfilling prophecy, really.
That a Wii U version existed wasn't announced until long after the other versions (same thing happened with Ghosts this year,) it wasn't advertised, it wasn't printed in big numbers, and the important thing is: It didn't NEED to sell big numbers.
It's turning a nice little profit selling like it does. And obviously all the Wii U owners who're interested have bought it.







