Personally, I wouldn't be too upset if it turned out that some games really couldn't be done on the Wii. MGS 4 I know I'm gonna miss out on, same with FFXIII, and that karoke game, mysingstar. On the X360 side, I'm missing out on Gears of War and the next Halo (which, I admit, is mediocre in many respects, but also very, very, lan-able) and who knows what else!
But these are trade-offs that you have to accept if you intend to buy only one console. On one hand you have games that promise you higher technical toys, more resolution, neat little physics effects that dictate how enemies die, etc. On the other hand you have a brand new input, meaning brand new ways to interact with games. Some developers choose one path, and that's fine. *shrug* I've simply cast my chips with the developers who go down the road less travelled.
So good luck to Free Radical! They've got technology that will be cross-platform across the PS3, X360, and PC, and an FPS to prove it! Sadly, it won't be on the Wii... but *clasps hands together* C'est la vie!
~Carmine M. Red
Kairon@aol.com