Any reference to 'duplicate functionality' is irrelevant since the iPhone Developer Program License Agreement, which presumably include the iPad, allows Apple to reject, or first approve and then reject at a later date, any application that
meets all their requirements. Apple want rid of something, it will go. They can even remotely kill an app, like Amazon can remotely kill a book.
Here:
http://www.eff.org/deeplinks/2010/03...-agreement-all