By this I mean, are all schools in America that teach combat arts originating in other nations watered down and diluted to the point that they don't teach anything useful? For example, are there Muay Thai centers anywhere in America that can teach someone, provided they are a good enough athlete and committed enough, to fight Muay Thai as well as a reputed place in Thailand? Or Kyokushin schools that can teach you to fight using Kyokushin as effectivbely as a reputable Kyokushin center in Japan? Or a Savate school that can do the same vs a Savate school in France, a Krav Maga center that can teach you as well as those in Israel or a Wushu/Kung Fu aplace that can teach that art as effectively as a reputable art in China? Do such concepts exist or all all the American places that teach such arts as Muay Thai, Kyokushin, Savate, Krav Maga or Wushu/Kung Fu all severely watered down and diluted?