The only real thing I have read about attraction so far is that it is probably coined by early experiences (like siblings, parents,...). Also, despite a continued effort by the fashion industry, I never had the impression that anorexia is attractive (hint, think Playboy, not Cosmopolitan). Your link doesn't tell me all that much without photos. In any case, it is obvious that there are all sorts of people (ie men who like fat women, men who like thin women, men who like old women, and so on).
I honestly don't know how to argue with you since I am not sure I agree with your assumption that women are valued solely based upon their attractiveness.
As for biology, there is a difference between men and women - the latter can bear children. Hence the "pairing" market is asymmetric.