During my career as a tune up technician I saw so many "innovative" spark plug designs that I don't remember them all. I saw them when they had problems with them, and usually the customer would not believe it. I invited them down to see the scope pattern. Sometimes I told them I would install new plugs and if it do anything I would put their snake oil plugs back in. I never had to put the old ones back.
One of the most memorable ones was a Bosch plug that had the Bosch name ground off and the side wire removed, so that the center electrode was all that stuck into the cylinder. The gap was unmeasurable, since it had to jump to the side of the head or piston or whatever. They ran OK for a few days than went to hell. One customer, an airline pilot, was so sold on them that he kept installing them and then bringing the car in when it didn't run right. The con man salesman was a true con artist. I changed the plugs twice in one car, and once in his other car. There were about a half dozen cars with those plugs, most of them were airline pilots.
Champion has or used to have an "air gap" spark plug. The part number included a "U". No other major plug company had them. the air gap is internal to the plug, and increased the voltage required to fire the plug. It did make the voltage higher when it did fire though, and was good for oil burning engines that otherwise might oil foul. As you might guess, though, it taxed the coil. The "plasma" design looks similar.
Their demonstration is just snake oil. They can build a demonstration device that will show whatever they want, and it doesn't need to in way way match how the actual engine runs.
If you really want to send your money off somewhere, pick your favorite charity. That way there is a much better chance that your money will actually do some good.
