[Soulzar]

Well, based on your gear and the WWS I would say the problem is your group. Did they want you to do more damage than that with a paladin and druid? You hit Lifetap 13 times! with a shadow priest and resto shaman you would have needed to Lifetap 3 or 4 times max, that is 15 sec (-whatever your haste is) of casting time you didnt get to do which goes a long way to keeping a sustained DPS number high.

If I had to guess, I woudl say you had 3 groups build properly, and 2 groups of casters/healers mixed with no real group support, but one getting the real shaft since they didnt even get a shaman for totems or hero.

Bottom line, dont get down on yourself...with your gear, without a shadow priest, shaman for hero and totems, a failboat drummer (1 drums buff??) and burn... 1726 dps is just fine. All those group bufs easily add 300 dps to a 0/21/40 build, probably more.