I can't justify giving Khabib any of the rounds. This fight was so bad that you could justify scoring every round 10-10. If I gave any of the rounds to anyone, it'd be Tibau. Round 1 Gleison was walking forward the first 3 minutes, while Khabib backed up. Plus Gleison had better strike stats. Round 2 he had a sortof-takedown. Round 3 he had better strike stats again and got Khabib's back.
Khabib arguably the GOAT but people shouldn't dismiss this fight as a red mark on his record. 29-0 he is not.