Saw this article on MMAFighting.com
"I honestly really don't think it does [work]," he said. "If you have any knowledge at all of jiu-jitsu, it's just not going to work. If you literally have never heard of anything and have no idea what they're doing, OK, kind of like the first UFC, yeah jiu-jitsu works. It's kind of like trickery, basically. If you have any idea about any of the tricks, it's just not going to work, unless you're a complete idiot and fall for it." - Dave Herman
There's also video of the actual interview with Ariel Helwani.
"I honestly really don't think it does [work]," he said. "If you have any knowledge at all of jiu-jitsu, it's just not going to work. If you literally have never heard of anything and have no idea what they're doing, OK, kind of like the first UFC, yeah jiu-jitsu works. It's kind of like trickery, basically. If you have any idea about any of the tricks, it's just not going to work, unless you're a complete idiot and fall for it." - Dave Herman
There's also video of the actual interview with Ariel Helwani.