There any information about this huge difference between those 2 mechanic.
As we already know elementalist have to swamp and keep rotation between 4 elements each one whit 5 skill to use. Traited whit arcane you can reduce the cool-down to 10 secs between each one, no reducing the Cd on each skill per elements.
But if we talk about engineer and they device kits have 0 CD in swamp and gave them perma swift.
according to wiki:
There is a 1 second cooldown when swapping to or from a specific kit, i.e. you must wait that long before swapping again.
i dont know if the wait that long before swapping again is a troll comment or is too much indee.
We just don’t want players to grind in Guild Wars 2. No one enjoys that.