Haitien's right about the effectiveness of the fighter based on number of styles learned. I don't want to start a terminology war, but while Jackie has a more shallow knowledge of multiple arts such as Shaolin kung fu, wing chun, kenpo, Shotokan karate, judo, Western boxing, and hapkido, the majority of his skills come from extensive Peking theater training, which includes martial arts technique but not a lot of theory. Jaa, while not branching too far out from Thai martial arts, has a thorough knowledge of modern Thai boxing, Muay Boran, Krabi-Krabong, pradal serey, Pencak Silat, and gymnastics, all of which make for a powerful if not as varied screenfighting style. But I assumed we were just talking about what either guy has brought to the table in terms of filmmaking.