You seem to miss your own point by trying to make all things the same. You are the one who thinks all male brains are the same and all female brains are the same. Hmm, how does one explain a male who is quiet and reflective and a female who is rambunctious and competitive? Are all males great at math and spatialization? Are all females great at talking and multi-tasking? Not in the world I live in. 

You do realize with these types of studies, they are talking about statistical differentiation and so-called significance rather than absolutes. Most neuroscientists would say if you gave them a brain or scan, they could not with confidence determine if the brain is male or female. At best, they could make a percentage guess.