Weapons in B&S have states depending on level and 'rarity'.
The stats (attack, accuracy, critical) seem to be pretty much the same regardless of class.
At least on low levels you get quality weapons as quest rewards (lvl1 and lvl5). You can buy a lvl7 weapon from a weapon merchant near the place where there are some bottle-like things on the map.
I got only to level 10 so don't really know about any higher level items.
Maybe I remember to make some screenshots ;-)