Let's say the good ole 20-80% rule is correct, and that women value looks as much as men do, (though I don't believe it's actually that high, but that's another thread entirely).
Let's look at the facts:
http://win.niddk.nih.gov/statistics/index.htm
74% percent of men are overweight or obese.
If you are not overweight or obese you are BY DEFAULT in the top 26% of men by looks. That's right, just by not being fat you are in the top 26%.
Add some muscle, a little bit of style and good wardrobe choice, and game and you are easily in that 20% range.
I'm going to have to ask the same question Fatal Jay is asking.