What a joke, it would of sold better on the U than the other platforms, this type of game belongs on a Nintendo platform, it will be on the Switch but i wont be buying one.
Its not 2013/14 anymore, even Nintendo's exclusive are doing poorly on Wii U. The systems core audience has adopted other platforms and if they haven't already they will do in 2017 unless they intend to quit mordern gaming.
The team will not loose out on many sales by cancelling the U version, those who want the game will simply buy it on another system whether it be the Switch, PS4, PC or Xbox One. Additionally the WIi U version would certainly be the most costly, time consuming port and the Switch version of the game is the real goldmine in 2017, the sooner they can get it out on the platform the better.