Hmm, so E(the Math SAT score that X deserves|the Math SAT score that X got is 800, and X is male) is just 4 points more than E(the Math SAT score that X deserves|the Math SAT score that X got is 800, and X is female). That doesn't sound like terribly much to me, and I'd guess there are plenty of people who, due to corrupted mindware and stuff, would treat a male who got 800 better than a female who got 800 by a much greater extent than justified by that 4-point difference in the Bayesian posterior expected values. (Cf the person who told whowhowho that Obama must be dumber than Bush -- surely we know much more about them than their races?)