There are so many blog entries at the top of HN about Android developers who made $500/mo from their apps. Guess what? $500/mo is nothing. $500/mo doesn't even pay for rent. If you write an iPhone app that doesn't look like Interface Builder exploded and you don't make at least $500/mo then you're pretty much a miserable failure. I have friends that have built the simplest, most inane iPhone games on a Sunday afternoon that make over $1000/mo.
The successes of iPhone developers absolutely dwarf the articles I've read about Android developers' incomes. I'm not talking about big game development houses either, I'm referring to 1-3 person teams (designer, coder, coder typically) who make tens of thousands of dollars per month. I'm personally friends with at least a dozen people who have apps that make this much. It's not even a surprise anymore when a nice-looking iPhone app makes $50k in its first month.
The reality is that iPhone developers who make decent apps make a lot of money. I don't care if the Android Market is 5x the size of the App Store if Apple is still paying out billions of dollars to developers.