[barranger]

I've found for the average non-tech user the only app they seem to really care about is the one that their friends are currently gushing about.

as an example (yes I read the anecdote article :) ) I spent the weekend with extended family who were going on and on about how great Instagram was and how they couldn't understand why anybody would even think about a phone that didn't have it. I'm sure when I see them again in 6 weeks or so, the argument will be the same, with only the specific app that changes.

While MS will have whatever "the" app is at a current moment from time to time, due to it's marketshare, iOS will almost always have it.