JohnOfMars
Banned
Easiest way is to just add their DPS, increase it by 15%, and then halve it. DW just alternates attacking with the two so it's not really an actual damage increase without the 15% Attack Speed increase (and extra stats on the off-hand).
If you have a lot of +Damage on your Armor, Rings, and Amulet then it may be slightly different but that's complicating matters.
But what about +STR modifiers to weapons if I'm a Barb? I don't think the DPS on the weapon factors that in. Will the detail on my character sheet have a final total DPS I can compare if I equip both options?