Weapon Kit damage
Kit damage is affected by the STATS that you have.
http://wiki.guildwars2.com/wiki/Damage
The higher your stats that affect damage (power, precision, ferocity, expertise, condition damage,…) the more damage you will deal. A ascended weapon will give you more stats then an exotic weapon but that does not yet mean that you will do more damage if you equip the higher quality weapon. Its the type of stats that are important. for example: equiping a “Nomad” type weapon which gives “vitality”, “toughness” and “healing power” stats will have no effect on the damage you will deal.
Equiping an ascended berserker weapon ( 251 power, 179 precision, 179 ferocity) will get you a beter DIRECT damage output then equiping an exotic berserker weapon (239 power, 171 precision , 171 ferocity).
Go play around in the build editor Here to beter understand.
(edited by santenal.1054)
If we are talking only the weapon and same stats, exotic vs ascended would give you what, 1000 vs 1010 damage? Its well within the RNG of attack values.