Street Fighter III 3rd Strike's Chun-Li is the best sprite out of the SF games. No doubt about that.
I just wanted to ask that question, realistically speaking. I did a Chun-Li bead sprite of her doing one of the signature victory poses a while back for my boss's store. While I would love to have that bead art kept, someone had bought the bead sprite. I'm not completely discouraged, because then I have another chance to make more Chun-Li bead sprites. After looking this Chun-Li bead sprite, it has given me some good ideas of inspiration.
If this fight happened Chun-li would win easy, because she trains since young, she has mastered very well his technique, Mai already entered the tournament just to impress her boyfriend, she not spent her whole life fighting. Chun-li Wins.