Karazenpo said: The core or nucleus of these systems are more similiar than different, however, the major difference that I do see is the lack of groundwork and grappling in American Kenpo. Most EPAK schools that I know of that teach grappling at all take it from another system for it is not included in their curriculum. I've heard some make a case by saying that they don't have to go to the ground or grapple, they end the fight standing up! That's pure fantasy to me! Being in law enforcement since 1977, fights can unexpectedly go to the ground, so expect the unexpected and train for it. Some have even replied that they will counter any takedown-again-fantasy! It could be a slip on your part, an act of God as they say, an icy parking lot, wet street, snow, uneven terrain or your opponent simply takes you down! This to me is the main difference. I have also heard, but don't know for sure, that American Kenpo doesn't concentrate on weapon defenses as intense as Kajukenbo, again, it's just something I've heard over the years. There is not too much jui jitsu either in the American Kenpo from what I've seen.