-10 hp for 5d6 and +1 crit multiplier every 8 seconds vs 2d6 damage each swing and - 1d6...which is better and which is worse?
I think its 95ish (likely wrong) 1 handed attacks per min = 95/60 = 1.5 attacks per second or 12 attacks per 8 seconds.
DS = -10 hp for 17.5 damage
Vicious = at 3 attacks you have delt on average 21 damage and taken 10.5 damage
Critical DS hit = -10 hp for 35 on 2x, 52.5 on 3x, 70 on 4x, and 87.5 on 5x... assuming the good damage is multiplied by the critical (pallys can hope).
Vicious = 5 attacks = 35 damage - 17.5, 8 attacks = 56 damage - 28, 10 attacks = 70 damage - 35
Over 12 attacks vicious nets you 84 damage delt to the mob and -42 hp to you.
Note: This is just a comparison of some numbers, doesnt take into account runs where you take more damage then the mob does and always assumes that you are hitting with both the DS and Vicious weapon. Though missing with a vicious weapon doesnt hurt you.