Hes a true sportsman
This is the key.
In america the people who do boxing are the criminal thugs who otherwise would have fought on the streets anyway. They claim to have been saved by the boxing gym, but their true personalities always threaten to break through. And professional boxing is just seen as a violent spectacle by most.
In russia boxing is considered a true sport and then you get true sportsmen like the Klitschkos participating. The Klitschkos would never have done boxing if they had been born in america.