There's a whole style which beats MMA fighters in proven seminars going back to the 1990s and much earlier than that: It's called Isshinryu Karate. It was found that Isshinryu karate fighters were on average 2 belt ranks better than Gracie Jiu Jitsu fighters in open seminars in 1992 and again in several other open seminars through 2000. I've tapped out professional MMA fighters 5 out of 6 rolls with them in their own gyms thanks to what this man, Michael Calandra is teaching and thanks to what my original Isshinryu instructors taught me in the 1990s and early 2000. The speaker is a police officer and has used these techniques literally 1000 times in street policing situations, and you have the audacity to claim it doesn't work. I think I'll trust the retired police officer, instead of some internet troll. P.S. I trained with Royce Gracie's first cousin in Gracie Jiu Jitsu for about 1.5 years all together, and they teach literally NOTHING that isn't already taught as part of the Isshinryu combat system.

Also, I was my second Sensei's demonstration partner for about 3 years, and I can tell you first hand that these techniques work, and they hurt like hell, and you WILL tap out to it instinctively when it's applied to you. Anyone claiming Isshinryu bunkai doesn't work has never had it done to them.