The other thing to remember is huck has one of the best chins in the business whereas kovalevs chin is still unproven and questionable
Kovalev got a very good, fully deserved win but let's not get ahead of ourselves.. As others already pointed out Huck isn't as skilled as Kovalev BUT he has respectable pop himself, is naturally aggressive, a very good chin and he doesn't get discouraged if the fight doesn't go his way, he just tries harder. Kovalev has no chance to keep a guy who would probably outweigh him by 15 pounds atleast at bay, especially if you take Huck's own strengths in consideration.
Huck was ground down and stopped by pudding puncher Cunningham. Besides Povetkin , he fought nobodies since then. Povetkin was fat , slow and gassed out after 4 but still had him staggered many times. Povetkin of today would pan him clean out. He looked bad in his last fight. Too inactive, too open. Krusher can hurt you through the guard. He picks off Huck slowly and brutally
Your right he didn't look too good in his last fight and the performance against Cunningham was poor. I still think though that huck is too big too strong but also wether kovalev would have the same kind of power