Maybe it'll even out at that level but I've got a mid-20's warrior that can kill 3-4 and rest in the same time it takes my similar level priest to just kill 3-4 and he's doing it at the next level range area.
The melee types have a big advantage in that AGI increases both attack speed and damage and they get AGI at each level up. The higher level they get the faster they attack.
Bug: For the manacle recipe, I didn't have felstones that it shows I need but it let me click on it from book which added only the iron bars and then failed craft because I didn't have all the items. Other craft stuff gives message if you don't have the resources.