SAM is extremely strong right now, hovering in the top 3 DPS for all savage encounters except E1S, but it's to be expected that SAM would be outperformed by classes with much stronger cleave there. If your concern is with your own DPS, there are up-to-date guides and resources you can use to help improve your gameplay. A 460 weapon will do you no favors if you are comparing yourself to people who are clearing savage, as even small differences in weapon damage translate to huge differences in DPS.