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

[fleischr]

bubblegamer said:
Halo has the advantage seeing as it's the bigger franchise.

Brawl has more sales than any individual Halo game. Melee outsold Halo 1.

What really is the bigger franchise? The near entirety of Nintendo's 1st party mascots or Master Chief and the gang in series with declining sales?