I don't know specifics on MAX or super sets, but I can tell you it was an eye opener when my son attended a smaller invite camp at Mizzou as Sophomore. The staff had a couple pitchers show him around and the entire group went on a tour as well. THE Pitchers WERE RIPPED!
The first thing we were told is the Dieticians set you up with a plan, then the Strength trainers assess and program for your needs. It was a real eye opener to see just how big and strong a college pitcher really is...........or how weak a HS player is......
Mizzou is a bit of an outlier in that the strength coach is one of the most renowned in the world (Dr. Bryan Mann) and the school has a history of really caring about strength for their athletes. Their fireman reliever trains at our place (Nolan Gromacki) who is a borderline contributor for the team, but an essential one, and he's one of the best bodyweight-to-strength ratio trainees we've ever had, including professional position players. The school gets it.
Still, D1 players are far stronger than HS kids are, if only because 22 year old men have finished up puberty and have more years of full testosterone in them than an 18 year old coming in. Of course the usual work ethic, culture, equipment, coaching, etc all comes into play, no question.
The few HS and gap year kids we have at Driveline get exposed to professional athletes going about their business in a way that they have never considered. It's my job to hire and train the best coaches, give them the best environment including equipment and facilities, and set the culture by bringing in the right elite athletes ahead of them. I think I've done a good job. So when HS and young college kids see all of that, it's almost entirely on them to put forth the effort in the weight room, at home (sleep and nutrition), and bring the right mentality. Unfortunately, this is somewhat rare, simply because a 19 year old can't grasp the magnitude of how difficult baseball can and will be years down the road and what types of men they will compete against.
This, like many things in life, is a lesson that they will have to learn the hard way. And they will.