How very interesting.  Far be it from me to dispute new findings.  Differences, if the research is done well, should, indeed, be taken into consideration.  It is the word,"unequal" that can present the problem if it is used as a basis for unequal rights.  

I suppose "intellectual" bothers me the most.  It evokes the old, "Men are logical.  Women are emotional."  I recently read that some new research claims that there are more brain differences within genders than between them.  Plus, the old idea of the math and science versus language abilities  may have some merit, but, in the past -- and sometimes present -- was applied incorrectly to individual women and men by persons who did, or do not realize, that the bell curves of test scores overlap (As in the most gifted women in quantitative areas far outstrip the majority of men.)  and, that, furthermore, one should not apply general means or medians to individual cases, no matter what the subject of investigation.