So this would support the notion that people who buy iPhones tend to have more disposable income. I suppose that makes sense given the number of free low end android phones that people with less disposable income buys. I would wager those users who buy the Galaxy S4 or other high end android phones spend just about as much as iPhone users on other purchases.
Most of my workmates who earn exactly the same as me... a 'medium' income within $85k-$130k use Androids.
For whatever reason most perceive Google's store as having all apps for free and Apple's as charging for everything. Android users also seem to go for raw numbers/gimmicks vs style and real-world performance.
For example my colleague has his quad-core Android plugged in all day because the battery (which he'll always boast is 4x the size of mine... so is 'better') becomes drained within ~3 hours of usage. His camera takes high MP, useless quality photos... which he can view on a lower resolution but physically larger screen (which doesn't fit into his pockets so has to be carried in his hand or a man bag).
It's hard to describe the iPhone users (me) vs the Android users. Takes me back to the old Mac v Windows days. Style, simplicity and real-world performance vs big ugly boxes made of cheap plastic that I've never really seen the sense behind.
IMO this situation will always exist. There's a market for us and a market for them... enough said.