Slimebeast on 17 May 2008
I think you read too much into what a few titles at a specific point in time could mean in terms of overall strategy.
But yes, if you really want to speculate about the MS Spring Showcase games, you could very well draw the conclusion that MS feels that the X360 already has a strong profile as a "hard-core"-platform, but lacks appeal in other genres.
Btw, Banjo is a racing game. 
