lklawson
Grandmaster
Could be. OTOH, I think it highly likely that elements of parallel evolution may be at work. The human body pretty much breaks exactly the same way as it did 10,000 years ago, regardless of whether or not the eyes are round or slant, or the skin is dark or Lilly white.Not surprising since Bjj has roots from Judo exponents who often fought/cross trained with catch wrestlers, and Lutre Livre which also has some catch aspects.
Bjj practitioners have never made an effort to hide those roots.
Peace favor your sword,
Kirk