A developer whose app has been chosen as a finalist in a contest for the Android, wanted to leverage this fact in their sales pitch for the App in the iPhone App Store.   However, as you can see from this blog post by the author, that was a no go.  Apple wont have any part of it and seems to be taking an approach not unlike Microsoft of the 1990’s.  Take a look at the post : http://flash-of-genius.com/blog/?p=8