Interesting films from a Gracie Jiu JItsu academy in England that hosts challenge matches, all comers vs. GJJ as "case studies," to see how individuals trained in various martial arts fare against Jiu JItsu.

In most fights, a GJJ blue belt faces the challengers. The challengers are invariably larger and heavier than the GJJ representative. There are also pre and post fight interviews with the challengers. This is an interesting study in that it harkens back to the old days of the "Gracie Challenge' (albiet here in an often much friendlier context) so it's possible to compare various styles of fighting between non-professionals as opposed to two fighters both cross trained in MMA skills.

https://www.youtube.com/watch?v=Yo1UQB_boCE&list=PLE3A645ADBCFC6576

Excellent.

smithers