That small inner reap (ko uchi gari) at 1:47 that's the result of judo training. This is why Saulo always emphasises judo in his academy and having a solid standup helped him to get points plus top position.
I agree with Dana White, bjj is extremely boring to watch for most people. Maybe thats why so few people came to watch even top guy like Ribeiro there. Maybe that is why these guys do not make good money. You have to give excitement to people with things like this you give nothing.