If your saying Att% and Total Dmg %, then their the same thing[/quote]
No, he's asking which of these are better. A fixed amount added to your weapon attack, or a fixed amount added to your actual damage. On is on your weapon, the other is the numbers you see when you attack.
I'm pretty sure %total damage > %att. I mean if we think about this logically...
Our total damage is comprised of essentially two elements: attack AND stat (str, dex, luk, int)
So i assumed a % damage would be a superset of % attack or basically a %attack+%stat