For me, the ratio of my male characters to my female is about 5:3. I think it's because I get the female characters reactions down easier because they are aspects of me. With guys I tend to play around trying to get a feel for certain facets of their personality, with women, I tend to focus on backstory for the personality I've got. I guess it's just that I'm in a mood for experimentation rather than coming up with complicated backstories.