he counters with his L6, which is good if someone has spread bleeds around since it hemorages. It's also good because the L6 and L9 don't seem to take him out of tanking or use up his charges. The charges can be hard to come by as they have to be ranged attacks (which is dopey, but whatever). He helps a bleed team on offense with assists and counters, on defense with tanking, hemoraging and counters. Overall, he's not bad, just not game breaking.
Yeah, I I'd take either BK or CB at this point, though to me, CB seems overrated in PVP... of course, could just be my meta and the fact that I am running a bleeder + tank + agent with Warbringer Axe, MFG, Sudden Support, and Golden Screaming Eagle.