Truth Hurts

Revisiting the iPhone's Browsing Market Share

What this tells me is that iPhone users don't really visit many "mobile web" sites. That comports with my experience. "Mobile Web" is a joke - the sites generally crippled (at best) or totally useless. The iPhone allows the user to use the "real" internet and real websites. The difference between "mobile web" and the real thing is huge - it's like comparing a kids' ride-on toy car with a Ferrari.
AdMob has a vested interest in downplaying anything that makes the advertising service they sell look bad, so they would want to claim that iPhone users aren't really doing much browsing - because if iPhone users ARE doing a lot of browsing, and AdMob isn't hitting those (typically upwardly-mobile) users with ads, it makes their service look less valuable.