Two rules of online dating: 1. be attractive and 2. don't be unattractive.

That may be true, but recognize that just as in income, the quintiles are fluid. My wife (presumably) places me in the top 20% by her fitness function, while someone seeking GQ models for December's shoot wouldn't put me in the top 50%.

I can't find the link. But they did histogram of how men and women were ranked by who they were interested in.

Women by in large had an average at 6/10. Men had an average around 2.5/10.

Yeah its crazy, all these average single girls thinking they are better than the average single guys, until they hit mid to late twenties. Then they "settle" for someone they deemed undesirable for the previous few years.