AFAIK, every individual has their strengths and weaknesses.. everyone's got a role to play and make up for the other. As for gender's having anything to do with it, I highly doubt it. Not unless they wanted to be that way, I guess. And there are some women who are fine dealing with "salesman" or something.. Some may grow up in a haggling culture and be pretty good at it. Or their personality may be one that deals with leverage all the time.. like they're in sales or own a business themselves.