I think there is truth to your point, but then again you keep repeating that they are not focusing on the core anymore. There is no real info to back this up, you can make assumptions -- but those are
assumptions.We've had this debate a couple of times already, but people seem to be discarding actual real info coming out of MS.
Their hiring pages show that they have been focusing on
"Core" games, created a 200+ studio to support Halo, The Vancouver studio that has been working on a new IP (note that all Kinect mentions have been removed since last year and they have hired the senior designer from Crysis) and opening new studios that we for most part do not know what they are doing.
Next to that their XBLA published efforts have increased, publishing a lot of intresting IP's on that platform. It's always been looked over when people discuss exclusives, but they do count as much as any retail game.