Conor is a kickboxer, Khabib is a wrestler. Wrestlers beat kickboxers like 9 out of 10 times.
Are we forgetting Chael Sonnen smashing Anderson Silva for 5 rounds? Anderson Silva the kickboxer, had to use jiu jitsu to pull off the win in the 5th round.
Or why Nate and Nick Diaz keep turning down fights against wrestlers?
Or why GSP went undefeated for like 6 years by spamming take downs.
Wrestlers are dominant. That doesn't make kickboxers "over rated" though.