Maybe I'm the only one, but I thought the point of the "rating" was to score the woman as though this was a beauty pageant. Most women on the planet are going to wind-up in the 4-6 part of the curve (although we don't see many 1-4's being posted). 5 is an average woman.
I guess I'm saying, the score doesn't have anything to do with "would you" it just influences the ORDER of who you'd do, if you had the chance.