I’m gonna start by saying that music is music no matter where it is from! I love British and American bands although mostly American
I hear things all the time about America being “behind” on music but I don’t really care about that kind of thing, I don’t listen to something just because it’s trendy I listen to it because it’s good!
You can get some metal elitists saying that British heavy metal is true heavy metal but clearly those guys just haven’t listened to any good American metal bands. There is no “true” heavy metal.
I suppose all it really comes down to is taste, there are good and bad bands from both places yet this is still a debate somehow