Do I have to spell out the blindingly obvious fact that the portion of women with large breasts is significantly higher in video games than in real life? And that most characters with said breasts are scantily clad? Even when the characters are meant to be warriors?
http://images.multiplayer.it/thumbs/...1400x0_q85.jpg
Compare that to the male characters in Soul Calibur 5.
So in case it's still not obvious: male characters in video games have all kinds of functions and personalities. Female characters are almost always there to titillate the predominantly male gamers.