Not convinced of that really. LL is defo the King of the Giants, even though he's a small giant, compared to the 2-4 inches some of the others have on him...
Currently in charge, an fresh in every ones minds cos everyone here has seen all his heavyweight fights which have all been victories
But on flipside Usyk wasn't in his absolute prime vs Fury either he was older than Fury. I know Fury hasn't kept himself in shape like Usyk does aswell as all his other bad habits outside the ring. But Usyk also has wear a tear from fighting more championship fights than Fury aswell as his long extensive amateur career. Fury at his absolute best is fighting an ultra cautious fight vs an old Wladimir. And walking down Wilder who is a big puncher but limited. Usyk's skills and workrate not letting Fury dictate the pace is always going to be all wrong for Fury. Who simply hasn't got the cardio levels to live with Usyk in the 2nd half of the fight.
I think Usyk was in his heavyweight prime. He was obviously worse against Witherspoon and Chisora. If you want to say he was better as a cruiserweight, that’s a different talk.
I guess you'd have to concede that they hit harder, bigger stronger and all. Though that is not always the case among smaller fighters, where strength doesn't always mean power. But HW's & S-HW's are different animals aren't they, I mean from the very early days HW was often cited as "it only takes one good punch from these men" and TF always used to say that just wait to see what it feels like being hit by a 300lb man, he is right and again, HW has always been noted for it. I wouldn't say TF is a big hitter for a giant either, which is interesting, but LL can Pop as the other two can as well and with the old adage anyone of the 3 you mention can win, but LL should be able to outbox them, ride them out and possibly stop them, but again HW is a Punchers Division isn't it. but in answer to your question, as I stated, Yes, they probably hit harder, but not a given they would beat LL...