PS4 because it's the largest and has gamers of all types.

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..

Murica

Wii U no doubt. PS4 might have a bigger install base, but not for these types of games.

For those wandering if the warning was legit
it wasnt just put there just to make this thread a non console war thread.

Wii U. Installed base doesn't matter if your game doesn't appeal to that audience.