Funny because Khabib outstrike Al on standing. Al outstrike Kevin Lee, and went to toe to toe with Masvidal.
Khabib also dropped Conor with an overhand while Conor never dropped him despite Conor having a longer reach advantage against Khabib.
Khabib is schooling Conor in striking by moving backwards:
Conor's reach: 74'
Khabib's reach: 70'
You said he lost the round because of being tired.
Nate lost the fourth round against Conor and couldn't finish him while Khabib finished Conor in the fourth. Is that mean Nate was tired against Conor in the fourth round since he lost that round to Conor and can't finish him?
Colby too then was tired against old RDA since he lost the fourth round against him.
If your criteria for cardio is not losing any rounds then Khabib barely lost any rounds in his entire career.
Khabib didn't lose a round against prime RDA.