I think the current poll results might be an accurate picture of how this game will sell on the respective platforms:
Wii U: 52.64% of the total sales
PS4: 45.36% of the total sales
XOne: 2.00% (you may have to add a little to this number and subtract from the first two, but I don't see it being more than 10-15% of the total sales)
Hands-down, the popularity is going to be much higher on the Wii U than the PS4 just because the Wii U has all of the hardcore platformer fans and this is game is going to be a total tribute to the Mario Sunshine & Banjo Kazooie days. That said, if by 2016 the PS4 has 4 times the install base that the Wii U has, I suspect the total sales may be really close even if the game is way less popular on the PS4. The Xbox One version won't even be in the race..







