Pve duel weild frost dk's...

[ultrydina]

Are they bugged? do some mechanics not work? what mechanics are bugged? i can do 220k sustained dps on dummies with them and right now i am full mastery(which includes gemming for example str+mastery in red sockets) but see that 220 is probably 170-150k as howling blast hits 2 targets..

Also does duel wield have a weak opener or what? because i use a pvp weapon for 2h and i still did more dmg in opener than duel wield