Using a testicle-less crotch as weapon, not a liability.
Obviously, women do not have testicles. A woman who exposes her crotch while fighting is at significantly lower risk than a man in the same position. However, many video game designers take this knowledge to the extreme, creating impractical fighting moves for female characters that feature their crotch not as a liability, but instead as a sort of weapon. These female characters will go to extreme measures to force their crotch toward their opponent, which they will then use to grapple their opponents into submission. This is possibly a form of fanservice, reminding the player of the character's female gender by having her perform moves that would be impossible or extremely painful for a man to do.