I mean, this is supposed to be a professional athlete. He's making light of not doing cardio and openly states he doesn't have his diet under his thumb. He's a template of so many HW's, which is why the likes of Cain and Stipe stood out like a sore thumb for the cardio they had.
Contrast that with heavyweight boxing and it's fair to say MMA has a long way to go in getting up to par. Not saying HW boxers are cardio beasts, but contrasted to their equivalent MMA fighter, they're triathlon and Tour de France elites.