Thread cleaned up; several posters were wrong.
The game checks three things for the damage of your weapon:
1. Is it a random dropped weapon, or is it a crafter/collector/PvP/green weapon?
2. Do you meet the requirements of the weapon?
3. What is your current attribute level in the related weapon mastery line?
If it is a
dropped weapon:
2. Meeting the requirements causes you to deal the full (15-22) damage of the weapon. Not meeting the requirements causes you to deal half (8-11) damage.
If it's
not a dropped weapon:
2. If you meet requirements, you deal full (15-22) damage. If not, it drops to some number below half damage. (Whatever that number is, it's not very good.)
3. The damage in step 2, whichever one you take, is multiplied by the following numbers, depending on your level:
Code:
Attribute Level Percent of Weapon Damage
0 35.6%
1 38.6%
2 42.0%
3 45.9%
4 50.0%
5 54.5%
6 59.5%
7 64.8%
8 70.7%
9 77.1%
10 84.1%
11 91.7%
12 100%
13 104%
14 107%
15 111%
16 115%
(The above was taken from
this guide, which is fairly old but sufficient to understand how it works. There's a more detailed guide
here. I also wish these forums could do tables, but that's irrelevant.)
Example: You have a req 9 max damage sword that you got from a monster. If you have 9 Swordsmanship, you'll get the 15-22 damage, but that'll be multipled by 77.1%, giving you (15-22) x (77.1%) = 12-17 damage. If you have 16 Swordsmanship, you'll get (15-22) x (115%) = 17-25 damage. If you have 5 Swordsmanship, you'll get (8-11) x (54.5%) = 4-6 damage.
So as the others have said, if you have 16 Swordsmanship, you'll deal the same amount of damage with a req 8 and a req 10 sword. The only time it'll matter is if you are at a level below the requirements of a weapon, which should be never. People with money to spare just like low req weapons, that's all.