I won't use gender as a precursor to dictate who is better in this case. It depends on your nature and exposure and the kind of things you are passing through. Any gender can be good and so I can't draw a line here.
I think that gender should not be considered in this case because it is highly necessary to consider the skill and the exposure of the person that is to go for negotiation and it could be either a man or a woman.I won't use gender as a precursor to dictate who is better in this case. It depends on your nature and exposure and the kind of things you are passing through. Any gender can be good and so I can't draw a line here.