If your feeling your dos is gimped as a guardian your either a. doing it wrong (most people) or b. just bad (wait, maybe most are here). If you spec as focus, and then starting taking every single talent that buffs force sweep. With all the talents, force sweeps crits are huge (5-6k), guaranteed (talents), and usable every ten seconds or so, fill the down time with sundering strike and master strike and your dps is potentially as good or better than most