Remember the good old days?
I've seen people say he cuts from 200 lbs while Conor starts cutting from 180, but i can't find any proper sources for any of it. If is it only means:
A: Khabib is more efficient at weight cutting.
B: Conor sucks at it.
Exactly. Khabib vs. Ferguson makes the most sense in my mind.
And also correct on that account. Connor "gassed" but you have to look at how he gassed. It's not because he went for it and threw wild combo and gassed himself out. Rather, you have someone who is really good at controlling holding you down so you are carrying both YOURS and HIS weight.
This type of endurance isn't going to come from just working out or running, without rolling with someone who puts immense pressure like that, it is really difficult to udnerstand how quickly that sucks the energy out of you and how hard it is to recover from that.
How does Connor improve? Technique. Connor will never be at the level where he can go move for move with Khabib, but he can at least be proficient enough to be able to work out of bad positions without losing all his energy.
FYI much better cardio for Conor of would improve his odds at winning. If he can sustain the same pace for 5 rounds, then he can spam his kicks for 5 rounds. If he tires in 2, then he is a slice of tiramisu for Khabib again.
Conserving his energy won't do much against Khabib, he needs to stay active not the other way around. What you said is true, just by doing runs he won't improve his cardio enough for Khabib, he needs to roll with somebody that won' t ass kiss him in the gym, and prepare him for a real situation.