I suspect you are going to get a lot of "you are wrong" comments; primarily from people who would say "I cross slowly, but I am not average!" Good post, I liked it.
That's expected - after all, everyone think's they're above average (http://www.cbsnews.com/8301-205_162-57568186/everyone-thinks...), it's the phenomenon known as illusory superiority... "On a scale of one to 10, you probably think you're a seven. And you wouldn't be alone."
(Disclaimer: though granted, I'd hazard a guess that most HN readers are generally above average.)