Unfair but relevant

A while ago I wrote a post talking about how sometimes, the best and most important comparisons are those that are unfair, but relevant. 

This is a pretty good example of an unfair but relevant comparison: Facebook's active users of Android and IOS by region. 

People who buy $600 phones (Apple's ASP) and people who buy phones for $250 (Android's ASP)  or less tend to be different types of people. 

Of course, whether everyone in Greenwich who will ever get one already has an iPhone, and hence whether there's any more growth to be had, is another equally relevant question.