I understand your opinion, and by all means you are free to hold it, but I simply don't believe such gender differences can be completely removed. Sure, the overt ridicule might be removed, but the underlying stigma of losing to a girl is not something that can be removed. Similar to how it's hard to remove the stigma of losing to a smaller opponent in a martial arts match, no matter how much rationale you throw at it. It's a "David vs. Goliath" mentality.