It is not uncommon to see a shorter athlete combating a much bigger and taller opponent in Brazilian Jiu Jitsu. Anyway, it is widely believed, and Royce Gracie proved it in the early UFC events, that BJJ in fact is an art created for shorter practitioners to defeat bigger, stronger, and taller opponents.
Here’s some advantages smaller jiujitsu players have over larger jiujitsu players. When you spend a lot of time training with bigger guys you figure this out very quickly:
3. Less space
4. Fitting through smaller spaces
5. Being forced to use technique