Guild Wars 2

When you head to ‘Heart of the Mists’ there are 3 vendors for each type of equipment.
I am gonna refer to the weapons vendor…he sells PvP weapons and ‘Steady legendary’ purples in another tab!
Well those purples are like a ‘constant damage’ weapon but are significently alot less on damage count!!! So why would anyone wanna buy those purples?
I tried some scenarios like one example, maybe the damage is based on your actual level and not scaling but nope, etc.
It just doesnt make sense to me why those purples are there?
Thoughts anyone?

Testing skills/traits/gear bonuses

Testing purposes. It deals static damage so you can test things against the training dummies without worrying about rng from the damage range of the weapon.