Nice marketing, that is about it. There is no such thing as a "perfect" brake. Load, carrier group, weight, hold, all affect performance. When you watch the portion of the video that shows the receiver, that gun is moving a lot more than the single shots of the muzzle. The only time they show the whole gun, it is already in full-auto and from far away. Their video guy should get a pay raise as he is good in the tricks department. Some of the actual language they use belies how comps actually work, but they will still fool a lot of people.

I have designed and built a lot of comps, and the two best comps on the market have no high pressure port as well as one other key feature. Take a look at the Seekins comp and the Dynamic Resistance comp. Those are the two most neutral comps made and both are well designed with actual understanding of the gas dynamics.