Especially if you look at profits share:
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This graph is a bit old though, and Samsung and Apple smartphones are even more popular now. While the graph says Samsung and Apple combined account for 99% of the industry's profits, a more recent analysis now puts them at 106%, meaning all other manufacturers combined are in negative profits.
EDIT: Oh, looks like you were talking about iOS+Android, not Apple+Samsung.
That graph along with the statistic that show that the vast majority of mobile web browsing comes from iOS devices are the two most important sets of data, in my opinion. Market share stats like the one in this article don't tell the whole story because Samsung, in addition to their flagship S3 and Note 2, sells a bunch of very low end devices on all of the major carriers. As crappy as these phones are, they're still considered smartphones. The problem for Google/Samsung is that most people who buy these phones just use them as phones. They may not even know what apps are. iPhone users on the other hand tend to be much more aware of what their devices can do and generally sign on to expensive voice/data plans.