Which will sell the most: Smash Bros U or Halo Master Chief Collection?

[flagstaad]

Hard choice.
Smash is a new game, MCC is a collection
Wii U has a bigger install base than the Xbox One
Smash is also available on the 3DS, MCC is X1 exclusive
FPS is a more popular game
MCC gives access to the H5 beta
I will go with Smash, but for very few units, Japan may give it an edge.