Jay Yarow for Business Insider, on the disparate numbers between the mobile rivals:
This is astounding when you consider that comScore says Android has ~52% of the smartphone market, and iOS has ~42% of the market in the U.S..
However, this is still a jaw-dropping gap in usage between the two platforms. It suggests that the focus on smartphone market share misses a bigger picture about how the platforms are actually used.
To quote Gruber: No shit. (Emphasis mine on the last sentence.)