Social science cannot sidestep these questions forever as interesting, empirically robust, and predictive theories are making their way out of sociobiology. Of course, as a left-winger I always suspect the first person who attempts to justify inequality as a function of biology when we know it has something to do with the social organization of gender, race, and class through exploitation of labor and inequality in the distribution of assets. My take on the case is that it is evidence for biology being the primary determinant of one's sex, male or female.
Biology especially includes the brain.
Regardless of our secondary sex characteristics, it is the brain and biology that determines our sex. The roles associated with being male or female, our gender, are socially constructed and derive largely from culture. The ideological point being that biology is destiny.