MK8 sold so well because Wii U owners were starved for Games

[cusman]

I think the important thing to note is that even if MK 8 sold because WiiU gamers were starved for games, they still wanted to play more on WiiU. They could just as easily move on to another system and have more games, but they still enjoy playing on WiiU whenever any new games do come to the Nintendo system.