There is something wrong in the sense say if the BST does not use a pet however, because all his traits and abilties are weaker and even his best weapon (an Axe) will be overshadowed greatly by a WAR's Axe. So in a way it DOES sorta gimp your exp if the BST does not play right. But that also means that the BST to play right, most likely will need a pet..therefore gimping his own exp. So in short...meh O_o its just less of a hassle. Theres tons of DDs out there that need a PT over a BST...and i really dont know how reliable a BST will do tanking with a pet...at least with charmable ones i aint sure about Jugs and with Biscuits.