Could Kovalev have beaten any of Marciano`s opponents?

Sure, but he was always been fighting in the light heavyweight division.

Some light heavies manage the transition north better than others.

 

Even on that basis, everybody that he fought had to make a 175lb weigh in, before the fight took place.

Success against them, would not necessarily translate into success against somebody like say Rex Layne, in a heavyweight or catchweight fight.

The bottom line is that he might be another Harold Johnson, or he might be another Bob Foster.

 

I think it's just a question of how he does against the best that Marciano faced. The rest is pretty much irrelevant.

His biggest problem is his gas tank. Durable guys who can take his power and extend him would have the best chance. Even a slobberknocker like Layne, if he could do the above, would have a chance. However, I wouldn't pick him.

I would certainly favor Walcott.

 

But had issues with awkward fighters, especially with power.

 

Disagree, Spinks is better H2H at LHW and HW than Walcott imo.
Foster is harder to beat at LHW than Wallcott is at HW imo.

 

No. Spinks was much better, he was more skilled and faster.
Styles also make fights

 

Spinks didn't really do enough at heavyweight, to show that he was better than Walcott.

 

When did I say that Spinks's offence was better?
I do think he hit harder and was more explosive but there on similar levels.

 

Maybe, but we did see alot of him at HW. Are there 40 rounds of footage of Walcott at HW?