I thought this cartoon expressed, in that inimitable manner that pictures have a way of doing, a little too accurately for comfort, exactly how the users of the three primary smartphone operating systems in the U.S. view themselves and the users of the competing systems.
Enjoy!
ETA: Oh. And for a more serious view of the differences, check out this Fortune magazine article written 9 months ago (which is a lifetime in the smartphone industry, but interesting nevertheless).