Kosen Judo didn’t defeat BJJ because Helio was smaller than Kimura.

This post isn’t going to be long. Lots of people who want to claim that Kosen-Judo(Judo before the olympics fucked it up) was still inferior to BJJ in terms of the quality of it’s overall grappling and ground work. Never mind Kimura, Mifune, Maeda were doing De La Riva guard and X-guard long before modern