Yeah the " evolution " of MMA fighters sure is a myth, at least as far as HW fighters are concerned..
PRIDE's 2002-2006 generation was exceptional (+ AA and a few more ) , hence why half of the top 10 were still 40 years olds of that epoch a year ago ( prior to Barnett disappearing, Werdum popping, Hunto & Overeem taking a step back etc ) ..
Now you have people like Volkov and Lewis, in the top ten, that would have gotten beat up/ outjabbed/ wall and stalled by a prime Big Tim...