He's a blackjack player. I know very little about blackjack. I'm a machine pro. Low risk high reward plays are my specialty. From the very beginning I looked for ways to take the downside variance out of it. To do it you have to be able to look for, recognize, and exploit unusually large advantages.
Take a $5 video poker player with a .5% advantage. His expectation on a 2 million dollar wager is a 10K profit. Let's break it down to 800 hands per hour which is a 20K wager per hour. His bankroll is taking huge fluctuations, to the tune of thousands of dollars per hour, to gain the expectation. And it's highly possible he could book a loser through a 2 million dollar wager.
I know how to make 10K on a 70K wager. Thats because I'm working edges about 30 times greater than the $5 video poker player. Such a small wager compared to his means my bankroll don't take the huge fluctuations that his does. I would have to give away to much information to the public to thoroughly explain how its done. But my downside risk is somewhere between slim and none. I bitch and complain when I only make $200 for the day.