There is a clear level difference between Conor and Khabib. Lol at thinking Cerrone fight means something, look at Nate Diaz fights, that's the real fight, and we know how hard for Conor to beat Nate Diaz. He got choked in the first fight, he barely won the second fight, by losing 2 rounds against Nate Diaz.
Even a kick boxing match would be close between Conor and Khabib, as Khabib is very fast, and he has a very tough chin. His jabs can put Conor on distance. He can even put pressure if he wants. Look at the round 3, you may say that Conor won ''barely'', but Conor definitely took a couple of serious jabs which was dangerous for Conor, which is why he couldn't do anything to Khabib, only outstrike him barely.
Adding Khabib's wrestling, ground game, his takedowns puts him on another level than Conor. Conor can never beat Khabib.