I'd be interested in the difference in CPM for something like this in comparison to similar download stats for the iphone. My hunch based on figures we have seen on here from time to time that similar numbers would monetize better on the iphone.
So an app that gets 200,000 downloads on Android, might get 2,000,000 downloads on iPhone. (These numbers are roughly based on actual figures for my apps, like Brain Tuner [a simple game I created], which are available on both iOS and Android.)
Even if the CPM stays the same, revenue would be 10x because there are about 10x the impressions.