Gunslingers vs. Assassins (Wall of Text)

NLs get 40% more damage from each point into LUK than a Gunslinger gets from DEX. You can't just compare their base Attack.

It's just over 35%, and don't forget STR.

And it doesn't matter how much each point of LUK is worth for them, because Apples add 100 to Weapon Attack, which, assuming the classes are otherwise balanced, should give about the same boost in damage.