Actually I would say that SSBB is a perfect and first fitting example of how much a Wii title could sell Wii consoles. I can't recall Wiis being in high enough supply to get much of a increase in sales in one shot - we just hope that there IS a supply when SSBB is released, at least in the US, to see how much it spikes Wii hardware sales.
If it's sold out too much, we won't have a really good measurement until..... maybe Mario Kart? But that's not nearly as big of a release.
Numbers: Checker Players > Halo Players
Checkers Age and replayability > Halo Age and replayability
Therefore, Checkers > Halo
So, Checkers is a better game than Halo.