All the guys who seem to know what they're talking about say Precision is a must for DW. But I don't get it.
Base miss chance is 5% + 19% for DW = 24% all up. For each weapon. Basic DW penalty is 50% damage penalty to OH weapon. So with DW specialization giving a damage buff of 25% in the off hand weapon, total DPS = 76% * MHDPS + 76% * 62.5% * OHDPS. Assuming same weapon each hand, DPS = 1.235 * WDPS, or +23.5% damage net for dual wielding.
Now assuming 1 point precision reduces miss % to 23% for each weapon, equation becomes:
DPS = 77% * WDPS + 77% * 62.5% * WDPS = 1.25125 * WDPS, or +25.125% damage net.
So with all 3 points precision:
DPS = 79% * WDPS + 79% * 62.5% * WDPS = 1.28375 * WDPS, or +28.375 damage net.
So 3 talent points has given +4.875% to DPS. Yeah its okay, but its hardly a must, is it? In other words your enemies die 4.875% quicker. Compare with 3 points in Toughness, which would let you live 6% longer. Or 3 points Blood Craze, which for 10,000 health gives you 300 health on proc, which when modified for armour, will let you live maybe 4.5% longer - on each proc! Lets not even get into Bloodthirst which, in addition to excellent instant damage, will heal maybe 150 health every 6 seconds, for a single talent point. Not to mention the DW specialization in the example which gave +23.5% DPS for 5 talent points, or +4.7% DPS for each one!
Can someone please explain why Precision is a must have for DW?
Base miss chance is 5% + 19% for DW = 24% all up. For each weapon. Basic DW penalty is 50% damage penalty to OH weapon. So with DW specialization giving a damage buff of 25% in the off hand weapon, total DPS = 76% * MHDPS + 76% * 62.5% * OHDPS. Assuming same weapon each hand, DPS = 1.235 * WDPS, or +23.5% damage net for dual wielding.
Now assuming 1 point precision reduces miss % to 23% for each weapon, equation becomes:
DPS = 77% * WDPS + 77% * 62.5% * WDPS = 1.25125 * WDPS, or +25.125% damage net.
So with all 3 points precision:
DPS = 79% * WDPS + 79% * 62.5% * WDPS = 1.28375 * WDPS, or +28.375 damage net.
So 3 talent points has given +4.875% to DPS. Yeah its okay, but its hardly a must, is it? In other words your enemies die 4.875% quicker. Compare with 3 points in Toughness, which would let you live 6% longer. Or 3 points Blood Craze, which for 10,000 health gives you 300 health on proc, which when modified for armour, will let you live maybe 4.5% longer - on each proc! Lets not even get into Bloodthirst which, in addition to excellent instant damage, will heal maybe 150 health every 6 seconds, for a single talent point. Not to mention the DW specialization in the example which gave +23.5% DPS for 5 talent points, or +4.7% DPS for each one!
Can someone please explain why Precision is a must have for DW?