Can we say that Usyk is arguably the greatest cruiserweight ever

[White Mandela]

He’s clearly number 1. His CW run is far better than Holyfields.

[_Rexy_]

You fight very differently when you know your foe can't KTF you out. In a helmet like that you can be knocked by a liver shot and I didn't see that often in heavyweight.
\Most of Usyk's knocks out were of barrels of his punches where his foes actually weren't knocked out cold and were on their legs standing. I would like to see how that would go for Usyk with someone like Hollyfield or Haye.

Anyway, Usyk is one of the best cruisers, I can't argue that. I will just watch happily how fighters of Ortiz/Ruiz caliber will destroy Usyk, let alone Tyson Fury.

Headgear is mainly protection against cuts, not against getting KTFO. It was actually removed from the olympics because they found headgear caused more concussions than not wearing any. But yeah, Usyk's KO's are mainly breaking the guy down and stopping them standing. The Bellew is the only real devastating KO I can think of.