That is exactly my point, why develop for WP7 if you can work with the technologies you want for other platforms which also have a higher userbase? However I s

That is exactly my point, why develop for WP7 if you can work with the technologies you want for other platforms which also have a higher userbase? However I suspect that some of the titles from companies such as EA or Gameloft are still written in C++ even though it is not supported officially by Microsoft. It is highly likely that they have some kind of early access to native code compilation for the platform.