I wouldn't say unbeatable. He would struggle greatly with an ATG level fighter than can use their reach advantage and make Bivol lead more. But Bivols skill set is some of best I've seen ever. I think H2H he's top 5 at LHW
Bivol out points him. Ward was the Larry Holmes’s of the light heavyweight division. A good fighter but dominated a weak era and wouldn’t be prepared for a fight against someone like Bivol.
Ward takes him on points. I credit Bivol for coming up with an impressive against Canelo, but I am 100% certain that Ward would have schooled Canelo aswell. Bivol has a good resume, but it is not nearly as impressive as Ward's. Ward coming up with dominant wins against the likes of Kessler & Froch, and managing to edge Kovalev (& stop him in the rematch), suggests to me that he could handle Bivol. While there is nothing in Bivol's resume that allows me to speculate that he could beat a Ward-level boxer.
Bivol getting alot of credit for beating Canelo by alot of the same people who will do anything to avoid giving credit to fighters they don't actively root for
I would be more interested in Beterbiev vs Ward. Actually I would be interested in Beterbiev vs Anyone.