It's interesting how they lump blackberry models together but not iPhone models. The curve 83/85/8900 series are pretty different devices.
Given the way they count and the fact that the iPhone is only one carrier, it's enormously impressive that the 3gs leads the list. I'd like to see some actual sales numbers, too. Presenting it as a "top ten" makes it seem like they're all very good sellers, but I bet the gap between the top few and the others is huge.