KO percentages say no. Ruiz failed to KO a shot Liakhovich who in his last 4 fights had been stopped 3 times. He also failed to KO a shot Kingpin who Joshua destroyed 3 years earlier.
Best punchers of last times (more or less): 1) Wilder / Price 2) W. Klitschko 3) Ruiz / Joshua 4) Dubois / Rivas
Or just maybe Joshua chin is not something really special. Klitschko was too old and slow when they fought. No doubt younger Klitschko would KO Joshua. And lets not forget Joshua suffer concussion in the 3rd round.
Wlad definitely hits harder than Price. And when he sits on his shots he's in the same realm as Wilder. Definitely a more proven puncher than Both. Whyte>>>
Wlad punch in the last times was not so powerful as some years ago when only his brother maybe hit harder. However ever better than Joshua and Ruiz but not as Price who hits as Wilder, said by Whyte, and if you see the videos of his knockouts it seems so. Whyte would be 5th for me cause Rivas knocked him down. Dubois is young but has dynamite.