Difference of humor between Japan and America

At " Language and Culuture", Mr Lavin's class, I learned about difference of humor between Japan and America. We watched "MIDNIGHT RUN" , and listend Amerucan jokes in practice with some script. American jokes are characterized by sarcasm and echoing. For example, on one scene, Walsh (Robert De Niro) says, "I've known you all of 2minutes and already I don't like you." Next, Duke(Charles Grodin) says,"Gee, that's too bad, I really like you." This is one of the sarcasm. Japanese don't say such sarcasm  as this. Also, I learned about difference of comedy. Japanese “manzai” is composed of “tukkomi” and “boke”. Generally, “boke” says absurd things and “tukkomi” points out them. But this style doesn’t catch the public fancy in America. America is composed of various races, so there is not “common sense” in America. For this reason, Japanese style of comedies aren’t accepted by American people.