I would think that as soon as Wii sales worldwide are only 80% of what supply is, then we may see Nintendo stopping the production increases. At least until a shortage is expected again, or sales go back up.
Numbers: Checker Players > Halo Players
Checkers Age and replayability > Halo Age and replayability
Therefore, Checkers > Halo
So, Checkers is a better game than Halo.