A question of Semantics

I did a search of this as well as a wiki check, so just looking for the community's input.

With the 15% damage modifications, is that to the weapons base damage, or total damage (if using attack skills / buffs)?

Thanks!

Bump. Curious to figure this out.

I believe it applies multiplicatively and before the inclusion of any additional skill damage.

Suppose you're using Galrath Slash with a 15^50 sword.
1) The initial damage roll will be somewhere in the range of 15-22. It is then modified by 15% to 17.25-25.3, and further increased by your weapon mastery.
2) I'm omitting the target's armor and level from this situation, because it's irrelevant to your question, but this is where it would be checked.
3) Lastly, the +damage provided by the skill is applied.

I agree, the 15% will apply before the damage caused by a skill.

Check out how much damage skills do on the dummies outside of Great Temple of Balthazar. Good way to see the 15% in action.