key being TO THEIR XBOX. If you don't have that then having an iPhone etc doesn't matter.
this is a gimmick, albeit a potentially very good one, to keep the XBox going. to make sure that it keeps a place in the living room with the Apple TV etc.
Sorry, but thats a pretty stupid comment.
With AirPlay the key is TO THEIR APPLE TV. It's the exact same situation, except an Xbox is much more useful than the current Apple TV.