I own an iPhone 4S, Galaxy S3, and a Blackberry Bold 9900 - all for testing. In terms of usability, I also put them in this order. Don't get me wrong: all three have good UI points (ahem harder to find in the Blackberry sorry), and all three have bad UI points (a blog waiting to happen for iOS too? e.g. you can't see the message above if you've typed a long message in Messages in iOS). But regardless: the 4S has much better usability guidelines than Android AT THE MOMENT. Namely, regrading the things the article brought up (e.g. icon sizes - come on...)
Personally I'd love to see Android up it's game, and since Matias Duarte has taken the reigns I think that we'll start to see it's usability become much more consistent - hence evening the UX playing field. I also really REALLY hope iOS fixes some of the annoying things in it's UI interface. Personally, I look forward to a greater UX experience all round - thankfully, arguably, that is already happening.