Why does Japanese Jiu Jitsu normally lose to Brazilian Jiu Jitsu My theory as to why Brazilian Jiu Jitsu is more likely to win in competition against Japanese Jiu Jitsu. Before i begin i would like to say i'am being completely unbiase when doing this analyzation, i genuinely was interested as to how Jiu Jitsu has never actually won against BJJ before, Catch-Wrestling, Submision Wrestling, Sambo, Judo, Collegiate and Freestyle Wrestling are all fighting systems that are predominantly based upon grappling techniques whether it's throws, holds and locks or control and restraining techniques these are all generally grappling based and all of these fighting systems one way or another have defeated Brazilian style Jiu Jitsu at one time or another, yet I have never heard of Tradition Japanese Jiu Jitsu systems ever actually winning against Brazilian Jiu Jitsu and this drew my curiousity quite a lot, why is it so difficult for these Japanese forms of Jiu Jitsu so difficult to win against BJJ fighters. After looking at how they are all trained i have come to this conclusion: Japanese Jiu Jitsu is not designed for competition, it's typical syllabus in most Japanese Jiu Jitsu clubs is the normally thing's like; Defence against a double wrist grad, defence against a side-headlock, defence against a front strangle, very effeciant for ending most street attacks quickly and effectively and most of all realistically (nothing flash just practical). While if i make the comparison to Brazilian Jiu Jitsu the sort of thing they teach is that you can nuetralize virtually any unarmed street attack by simply taking the opponent to the ground and sinking in a choke or restraining the opponent till help arrives. while this prolongs the fight which is not always the best decision it does technically give the individual the advantage as it's like a crocodile dragging it's prey into a river, the street thug is out of his element and is now in the BJJ practitioners comfort zone, as he/she is more familiar with the ground fighting than a street fighter that is more likely to be comfortable just swinging for the fences. Anyone who has watched grappling matches knows that it normally ends up on the ground and while Japanese Jiu Jitsu is meant to finisg the fight quickly and effectively using as little wasted movement as possible the Brazilian stylist is trained to fight on the ground giving the Brazilian practitioner the advantage. The second one is that Japanese Jiu Jitsuka train for a real life encounter while Brazilian Jiu Jitsuka train 50% street and 50% competition and therefor are more conditioned and trained for competition against grappling techniques that a Japanese stylist could normally use the subdue an untrained fighter. So in a way with Brazilian Jiu Jitsu you're not only trained to deal with street attacks but also with grappling techniques used in other martial art systems. This is my theory as to why Brazilian Jiu Jitsuka tend to defeat Japanese Jiu Jitsuka normally because they are simply more trained for competition than Japanese styles like Hako-Ryu or Kito-Ryu because they are not only taunt simple methods for fighting street attackers but also other forms of grappling systems.