Damage weighting
Damage weighting is a property of a weapon that causes the weapon to inflict more damage on a target. The damage does not apply when calculating the critical damage of an attack. As with critical weighting, there is a numerical value associated with the amount of damage weighting a weapon possesses, however, unlike critical weighting, the value is not halved when determining the value of damage added. Also, when determining the critical damage, there is a threshold of damage before the critical weighting kicks in. In order for critical weighting to take effect, the attack must cause at least a level 1 critical without the aid of the critical weighting. Damage weighting, however, will always affect the outcome of the attack.
Example
If a character swings a weapon with heavy (10) damage weighting (heavy is 9-11) and hits a creature wearing soft leather armor for 15 straight damage, it inflicts a level 3 critical, normally. In this case, we'll say it is a level 3 slashing crit to the chest, which deals an additional 15 damage, for a total of 30 damage. Now, add the damage weighting, +10, for a total of 40 damage to the creature with a level 3 critical hit. For the same amount of critical weighting, the weapon would've done 35 damage with a level 4 critical hit.
Another example, a character attacks, obtaining a +101 endroll. This would result in 1 damage to the opponent and a level 0 critical hit. With heavy (10) damage weighting, the attack would to 11 damage with a level 0 critical hit. With heavy critical weighting, the attack would inflict 1 damage with a level 0 critical hit.