Even at 1 million copies sold, Ubisoft would simply state that the Xbone pulled in similar numbers and was easier to port to, so the Wii U is still not worth their time.
The Wii U version would need to topple the PS4 version, over 3 million copies, in order to leave Ubisoft cornered.
Simply impossible. Though interestingly, I wonder how well the PS4 version would have sold had it been delayed instead?















