And it is not as if Maul was easily dealt with. Sure he got it where it hurt at the end of the duel by an angry Obi-Wan, but think of how long the duel lasted, with both Qui-Gon and Obi-Wan barely keeping him at bay. So Maul was an excellent swordsman and acrobatic as well. Duel of the Fates is the best duel ever!