is clean humor the route to success?

http://www.cnn.com/2009/SHOWBIZ/04/14/brian.regan.comedy.tour/index.html

Comedian Brian Regan is interviewed and reviewed in this aritcle by cnn. In the article they praise Regan's squeaky clean style saying that he doesn't need to use the dirty tactics that other comedians use. In my opinion you can not judge a comedian, musician, or any kind of performer based on their style. You may not like some stlyes, but you can not say that all comedians should take a note on Regans style and clean up their acts. Ones act should not be subject to critizism based on the "cleanliness" of their humor.