I bet the Wii version probably outsells a few of the other platforms too. Glad for the people who enjoy these that they're continuing to get made. Wouldn't it be amazing if Wii outsold all the other versions, so they'll do another one in 2019?
Out of curiosity, are there many other games that get released across three (or more) hardware generations? I can only think of FIFA 2014 right now which saw release on PS2, PS3, and PS4. There's bound to be more surely.