Women and men are a little different in this respect. If a really hot women comes on to an average guy, he isn't going to say, "No" or wonder what's going on (well he might, but only in passing). If a hot guy comes on to a woman, who isn't constantly inundated with hot guys, the women will often times be uncomfortable with his advances because she doesn't feel "worthy". So in that respect, a guy who is well above average in looks, is going to have to be more socially aware when he games women. He may have to down sell himself, or raise the value of the woman significantly, early on. An average guy knows that he always needs to upsell himself, and if necessary neg the woman a little.
Several pick-up artists have noticed what they call the +2 rule. The rule basically states, that if you have good game, you can almost always expect to pick up women who are +2 more beautiful than you. So I rate myself a 6, so with good game I should almost always be able to easily get 8's. Now that doesn't mean I can't get 10's it means that there is a lower likelihood unless there are other factors such as the woman's attitude, my social presence, luck, fashion, and my game. I don't know if I subscribe to this belief or not, but I have seen it thrown around.