Well, put it this way... Microsoft will have a worldwide launch (near simultaneous) so game companies that can have their games ready for all markets in time for launch or close to it have a nice chance to reap great rewards. If Microsoft is able to sell close to 2.5-3 million units worldwide for the holidays, the better games can expect to move 400k+ worldwide in the holiday season. The best launch games will hit 1 mil, imo. Not only will they rake it in at launch, they'll have built a nice fanbase that will likely look forward to a sequel down the road.
Madden '06, Ghost Recon 3, Godfather, PGR3 and Perfect Dark 0 are the likeliest launch titles that will sell close to 1 million when all is said and done.
Kameo, NBA Live, Fifa, Need for Speed, DOA4, and a few others could hit close to 500k or more, imo.
I expect all these games to pull in 8.0 or higher average rankings in reviews. That kind of quality is unheard of at launch period. The closer we get to 360 launch, the better all these games are going to look and many will become 'nigh irresistable for fans of the genres, especially to the mass market sports junkies. These are the reasons why Xbox 360 will come swiftly out of the gates and continue strongly with the release of the Japanese RPG's, Halo 3, Shadowrun, Bioware RPG's, Fable 2, Forza 2, etc in '06.
