It's relevant because it's a better comparison if you're a developer thinking about committing heavily to one platform or the other. A comparison of one cherry-

It's relevant because it's a better comparison if you're a developer thinking about committing heavily to one platform or the other. A comparison of one cherry-picked device from one lineup versus many devices from another gives you no useful information for making that decision. Or, more pertinently: if the headline had been "all models of iPhone plus all models of iPod Touch plus all models of iPad, combined, outsell (insert one and only one Android device)", wouldn't you have been jumping all over it for this very reason?