As opposed to what? N'Dou, Bruseles, Sosa, Gatti, Manfredy,Vargas, Mitchell, Corely...oh wait, Corely did land flush.
Hopkins because he has fought better opposition and in their peaks and even made the great RJJ look boring.
Floyd has the tighter guard, the quicker reflexes and upper body movements, and uses his range a bit better. Hopkins works angles better, controls the center better, and somehow is able to be even more efficient than Floyd when escaping the ropes towards the center. He just kind of "walks" just out of range almost behind his opponent and he makes his opponent work twice as hard as he does. Something I noticed when I saw him fight Cloud live. Both are probably equally adept at parrying.