One of the major reasons I've chosen to stick with my iPhone is the App Store itself, and the fact most game developers prioritise developing for Apple devices over Android. But now Google Play is reporting that it has over 700,000 apps available for download, which is somewhere in the vicinity of the App Store.
I would hardly argue that the number itself is any reflection of a changing of the tides, but it is interesting nonetheless. I own an iPhone 4S and an Android tablet, and it has been interesting to note what games are available on each device. For the most part I prefer to play games on my tablet, due to the increased screen size, but that isn't always possible. There have been times when I've had to download games on my iPhone instead.
Still there is an argument to be made that Android provides far more choice and variety when it comes to applications.
Swings and roundabouts I suppose.