One other point, I ran a major outdoor event this weekend and rented iPads for square transactions. There was no question in my mind that we would rent iPads instead of Android tablets. Why? Because all of our ticketing people we're already familiar with the platform.
Android and iOS platforms are not yet interchangeable from a user experience perspective, and I think that's what drives the kids to the iPhone. It's what everyone else has and if I have one, I'm fully interoperable.