Beterbiev throws short compact punches so fighting him off the ropes is suicide. Byrd is a light puncher but he has faced bigger stronger harder hitting guys so Beterbiev has to control Byrd with workrate
Byrd is facing a nasty stylistic matchup here, because Beterbiev has a high workrate and good boxing. Byrd was better at slipping big slow dudes who threw harder but less punches. I wouldn't write Byrd off, but I think Beterbiev should probably be favoured.
I honestly think Byrd just counters the hell out of Beterbiev and hurts him along the way. This takes place at heavyweight?