Interesting video from Kevin Tofel of GigaOm.com who switched to a Nexus 1 from an iPhone, to see the Flash experience on Android. The tl;dr version is sometimes it works, sometimes it doesn't, and if your claim to fame is "user experience", I can understand why Apple would be against putting it in iOS (even if they could just magically snap their fingers and have it work as well as it does on Android).