Mayweather vs McGregor; Fury vs Ngannou; Usyk vs Verhoeven. Where did the unboxer perform best?

20 yrs ago I was a big fan and follower of K-1, and to me the guys from there like Badr Hari, Jerome Le Banner, Ray Sefo, Mark Hunt, Semmy Schilt, Peter Aerts, Andy Hug, Ernesto Hoost etc., if they had all fought in boxing rules against MMA guys like Chuck Liddell, Randy Couture, Tim Sylvia, etc., imo the K-1 guys would have smoked them.

Before this fight I wrote on YT to some guys Verhoeven is a better boxer as Ngannou and McGregor, and many denied it and said Ngannou would easy beat him in boxing or any kind of stand-up fighting, which is imo laughable.

PS: This doesnt mean Rico would beat AJ, Partridge, Kabayel etc. in boxing! But I think nobody can still say he isnt a better boxer as guys like Ngannou, Jon Jones, McGregor etc., or?