Recently Connor and I have been discussing whether the iOS and Android ecosystems for developers and wanted to get your thoughts

If choosing one, my opinion is that the iOS ecosystem is extremely populated and probably more difficult to breakthrough with some success. If you can breakthrough, I believe you'll do better as iOS customers are generally more willing to spend.

iOS is definitely better to develop for though. I am not great friends with the slow Android emulator, and in the past I've had trouble getting my programs to work with all devices (ex. HTC).

Have you tried selling any of your apps on the play store?

No, haven't sold on either store.

Having sold apps on most major platforms (other than the WP store), I've found that the Blackberry Playbook is the best in terms of paid downloads, iOS is by far the best on average with free & paid downloads and Android on average has about 1/100th the downloads of iOS.

In ~2 yrs, I've bought just one app on my Nexus phone, but 100+ on my iPad. I think it's only partially to do with app quality; it's really about the 'fluidity' of app consumption on iOS. Everything seems seamless on iOS, but jerky, broken, tedious on Android. This is difficult to explain to someone who hasn't made this move: Android>iOS. It's the difference b/w Twitter app vs. Tweetbot on iOS. Both do the same things, but my Twitter usage has increased with the Tweetbot client. Or try Facebook or Flipboard, back to back on Android & iOS.

Subconsciously, I think the mind perceives this reluctance, so, on Android, we do what we need to do, and get out. On iOS, we savor things, and so, are willing to spend ever more on items (apps) to savor

Also, to add a developer perspective, I think the tedium of building for Android exhausts developers. Fixing basic user experiences on iOS is easier, so developers have the mental bandwidth to build in those experiential delights that make app usage awesome.

But as I mention above, this is a secondary reason. The issue is more at a platform level, IMHO.