One reason certainly is that the physical differences betwen individuals regardless of sex are bigger than those between sexes.
Also, the measurable physical differences in the brain structure of women and men are there but totally insignificant with regards to intelligence.
Side note, there is no way measuring intelligence based on a MRT-scan of ones brain.
Also, history might help, humanity had some bad experience with People judging stuff like intelligence based on visible physical differences. I suggest to leave These questions to actual neuro-scientists and not People who tried to apply mathematics to a question they didn't really understand in the first place.
Also, the measurable physical differences in the brain structure of women and men are there but totally insignificant with regards to intelligence.
Side note, there is no way measuring intelligence based on a MRT-scan of ones brain.
Also, history might help, humanity had some bad experience with People judging stuff like intelligence based on visible physical differences. I suggest to leave These questions to actual neuro-scientists and not People who tried to apply mathematics to a question they didn't really understand in the first place.