The development cycle that most games take is pretty long. Knowing that, when the Wii was first announced, I don't think most developers had any clue as to how successful it would become. So I'm guessing that they all decided to go with the surefire x360 which had an already impressive install base, which is why we are seeing a lot of really good games come out for it right now. The biggest problem with the Wii now, is that all the big publishers are pushing out unfinished games in the hopes to cash in on the holiday shopping season. This is resulting with potentially promising titles like the Soul Caliber entry being put on the market when they're not even done yet.

Everyone is scrambling to get on the Wii bandwagon before all the hype dies down and ironically, nothing will kill hype faster than unhappy consumers, which is what the publishers are doing when they throw stuff out the door in hopes of making a quick buck.