Speaking as a former student. Your post is absurd. EDIT: OP probably meant it academically. In which case the post is still absurd, but for different reason -

Speaking as a former student. Your post is absurd. EDIT: OP probably meant it academically. In which case the post is still absurd, but for different reason - the professor doesn't need to rate everyone else lower to rate one person higher, unless people are graded on a curve, but that's a problem with grading system and not a professor. Not to mention if the women aren't involved with every professor simultaneously, only a few of them will get a benefit by having sex.