ok the problem with people talking about Maul is you dont know how he operates hes an assassin. if he can avoid 1 on 1 fight then he will. the smart thing and probably what he would do is have one fight Mace into a position that leaves him exposed to a hidden Maul. If that fails try again until either he's dead or you've got 3 Mauls on the floor kicking ass. sorry but Maul would kill.
pretty sure maul directly attacks everyone he has ever been sent after...
http://www.youtube.com/watch?v=bPLXwrj7i7Q
very beginning of this kinda ruins your theory.