Wrong forum, try here
http://www.killermovies.com/forums/forumdisplay.php?daysprune=&forumid=86
Obi Won. To quote Wiki
Shooter A=Yoda
Shooter B=Mace
Shooter C=OBI
"If the shots are not to be fired simultaneously (as occurs in real life) [GJ- THIS SCENARIO] it is best to be shooter C. Shooters A and B, operating rationally, will target the more competent opponent hoping to prevent said opponent's shot from ever being issued. This means that shooter C is in little danger of being killed himself."