Ok, so Rick Roberge thinks that I am being too absolute in my interpretation of the gender brain differences article.  I did give the link so that I wouldn't be accused of misinterpretation, but that was not enough.
Let me clarify that the entire realm of gender is on a scale that ranges from extreme male at one end to extreme female at the other end with the middle being androgyny.  So, yes we are not all one or the other, but gradations of that gender and there are some real differences.
 If you are unwilling to make any assumptions based on gender, try sharing a bathroom with a man.  Or with a woman, if you are a man.  And selling is no different than all other aspects of life. You work with what you've got and make the most of it.  But since you may approach life differently, it follows that you may approach sales differently also.