Wii is actually in a strange position in that it usually has a lot of games catering to the expanded audience that helps bring in hardware sales while lacking a bit with core titles, now it is somewhat the opposite. They have a wealth of solid looking core titles coming along but very few console movers.
For the first time, I think they actually need to release MORE expanded audience games, like a new Wii Fit, to push console sales further. Though I guess with supply shortages in the US now, there's no need for that right now.
So for this reason, Wii will probably be down this year, at least from 2008. Unless the Vitality Sensor game is a major success, which it very well could be. Plus NSMB Wii will singlehandedly carry the console for awhile longer.
Though like I said, I find it hard to believe that the Wii's peak year was 2008, as that seems way too soon for any console, let alone one as successful as the Wii. Its peak year could very well be 2011 for all we know if Nintendo remains commited to releasing an abundance of great games and throws in some more Wii Fit type success stories.
