How does +% damage on weapons work?

Say, for example, I have a weapon with 500 DPS and for stats it says +20% damage, +120 vitality, etc. Is that +20% damage incorporated with the 500 DPS shown or is it 500dps + an additional 20% damage?

I assume it is incorporated otherwise it would make those weapons a bit too op no? Then again it is quite redundant to show +% dmg on wep if it is already added to the dps.

• Is this number already factored into the listed DPS of the weapon?
• Does this number affect anything beyond the base damage of the weapon it is on?
  • If so, how?
  • Does it affect my off-hand weapon if I'm dual wielding?
  • Is it applied before my primary stat's multipliers?

Solution 1:

Acctually, upon watching this video the DPS in that area IS accounting for your bonuses on the DPS are added to the range which is then added to the total weapon DPS.

Solution 2:

The DPS on the weapon takes everything on the weapon into account EXCEPT for class specific stats that would buff your dmg. For example it won't show the added damage INT would give a wizard, ect.