Maximus was a Roman general and then a gladiator. Inigo Montoya(The Spaniard from the Princess Bride) trained to be a sword master for 20 years and did some work as a mercenary to pay the bills. Maximus uses big heavy brutal weapons like a gladius and Inigo uses a very light fast sword. Maximus might also wear armor and use a shield. Who would win in a one on one fight?