@puffy, ok I wasn't sure but I read your commment and realized that I had made the mistake of calling it Wii Fit, instead Wii Fit plus in my last post.
When I started this thread I thought that it would be closer than if I had just done the top 5 selling titles on each platform (not just the ones released in the fourth quarter), but that the Wii would still win this. Obviously the real holiday boosts haven't kicked in yet, but I'm starting to think the Wii might have a hard time overcoming, Modern Warfare 2, Assassin's Creed, and the HD console's exclusives. New Super Mario Bros. Will be huge, but I'm not sure it will be enough for the Wii to win this contest by the end of the year.