Multiple ITF World champion Pierre Gunette vs Andy Hug,does not last long

[skribs]

"Proven to work" and "works 100% of the time" are two different things. If you set the bar that one bad loss by one fighter means the art sucks, then every art sucks.

It surely wouldn't take long for everyone to find a fight where a high-level fighter of any specific art got totally roasted by the other fighter.