Me personally they might imitated and duplicated but is will not like the original and that the problem when they adopter tv show from japan to america and is going to goofy and stupid !
Knew the japanese one not the american so yust watchd the courses a bit on youtube. The american obstacles are a hell of a lot easier thenn the japanese. I was inpresed by the ppl in tha japan one for what they did the american one is yust mehh..
I loved watching ninja warrior, that was one hellish obstacle course.
Americans love people winning, theirs seems to be a little easier
Personally, i couldnt do either, love em both!
Can't comment on the American version, but Makoto Nagano kicks serious ass on the Japanese version.