How are we supposed to know that? The only way to find out is to get that machine the Russians had in Rocky 4 and get both fighters to punch it. I hardly think that we can arrange all that though.
A machine like that is many places, like Funparks! well, maybe not as fancy as the one in movie, but still I think it goes for Haye, one punch power and speed!
I heard those machines don't necessarily show punching power, because they calculate the weight of the impact negating such factors as speed and impulse which are crusial when it comes to punching power in boxing terms. It's almost as if you could push that machine with you fist instead of punching it and end up getting a ridiculously high number. I could be wrong though.
Whats their KO %age??? That usually is a indicator...I know Hayes is very high but cant be bothered looking up Povetkins.