Good analogy
Not perfect - but if we're looking at it this way, SUVs are so remarkably popular because they can do so much. They're decent daily commuters (even if they're not the most efficient), they're good family haulers, they're good for outdoor activities, they're good for towing and for utility jobs, they're good in all kinds of weathers. They can be a pain to drive because they're not the most maneuverable or easy to park, and they're expensive.
Sounds a *lot* like Windows 8 to me. A lot of compromise in a jack-of-all trades, master of none scenario.
Android would be a passenger car, and iOS a fancy exotic marquee with only a few different models that are all sexy, sleek, a kick-in-the-pants to operate, expensive, and very limited.
