Yeah, I saw that and remembered that you train at his school. Crazy to see it work at black belt.
On a general training related note, I went back to back days of wrestling training this weekend. 5 minute rounds. No guard pulling, no rolling. Just takedowns. As soon as we hit the mat for score, back up. All nogi. And damn it was hard!!
Trained with a very savvy brown belt with great technical skills and a strong, explosive purple belt with great standup. Both guys about my size (5'11", 170) and both guys about 20 years younger.
The good part: I landed a number of solid takedowns and was able to consistently stuff and/or fight off their takedown attempts. The brown belt rounds were mostly a draw with us battling evenly. The purple belt won more than I did, but we had good exchanges and I kept it close.
The bad: Despite my being in great shape and having cardio for days, my 50 year old body just isn't as effective as a 30 year olds (both of whom are also in great shape) deep into the rounds. I went from offensive wrestling to transitional counter-wrestling to exhausted hand fighting, sprawling and stalling at the end. I was exhausted, drenched in sweat and had somebody's blood on me at the end.
Moral of the story: Take time to learn and train the takedown game, it's not only fun but important. Especially early into your training. Second, there's no such thing as 'too much cardio'.