Who wins in a usability shootout between iOS 7, iOS 6, Android, Windows Phone, and BlackBerry? The Pfeiffer Report:
The combined results of the four different benchmarks and evaluations give iOS 7 a clear advantage in terms of of overall user experience, taking into account the context defined for these benchmarks: day-to-day user experience of an average, non-technical user.
The only result closest to iOS 7 was iOS 6. Maybe Apple is on to something.