Usyk is a CW, but he moves like a SMW. His footwork and volume is unique for a guy his size. You just very rarely see movement like that from a big guy. And the opposition just isn't used to it. It's like when you see a WW punch like a SMW. The opposition just isn't used to feeling that power in the ring. Likewise, guys over 200 pounds were simply not designed to move that good. Its abnormal. Gassiev tried his best. But hes a high guard puncher. Hes used to deploying his arsenal against guys who move like 200 plus pound men.