I’d say the current state of heavyweight boxing. The undisputed championship match between Fury and Usyk (if it ever happens), will essentially be a poor man’s version of another UK vs Ukrainian bout Lewis vs Klitschko.
Fury is like a less complete version of Lewis, lacking the power that Lennox had, whilst Usyk (notably weak to body shots) is far inferior to Vitali Klitschko, who was by all purposes essentially a tank.
But any of the decent heavyweights back then (late 1990’s to early 2000’s) would smoke the one’s of today. Andy Ruiz would be demolished by David Tua, Corey Sanders would run rings round Deontay Wilder and god help AJ against Evander Holyfield.