Tyson fought in the 90ies, look at the fighters today, in every combat sport.
Anthony Joshua is huge, so is Wilder, Tyson Fury and the Klitschkos.
Judo has Teddy Riner, fellow countryman of Ngannou, a giant.
Greco has Mijian Lopez, basically a black Karelin.
Freestyle had Artur Taymazov on top for years, a real life ogre.
Kickboxing has Rico Verhoeven, a fit athletic 260 pounds man.
In a recent interview he talked about Anderson Silva, not the mma fighter but the kickboxer, about a potential matchup.
"Anderson Silva, he's okay. He's a good fighter, but he's not... Championship worthy is not the right words to say, but he's not on that level. He's been around for a few years, but I don't think he has the level to be the champion. I mean zero disrespect, because I love his style of fighting, but his body is just not built for real heavyweight. He's like 100 kilos. 102, 103. If you get a guy at 115 or 120 kilos, it's just a big difference."
Anderson Silva is still bigger than Rob Kaman, Ernesto Hoost, Andy Hug and Crocop in their Kickboxing heyday, but today is a different ball game.