Tony Jaa - Go watch Ong Bak
forget yea Muay Thai is definitely the most bad ass of martial arts, knee uppercuts and plenty of elbows to the face.
But in all seriousness Chuck Norris is known for being a 6 time karate champion and is a down to earth American that we all know and love. Bruce Lee is just a freak of nature Asian that can punch faster than human eyes can detect (in his movies he is actually put in slow-motion so that people can actually see what he does).
Bottom line: Nothing is funny about Bruce Lee.