Sorry bro, but you are incorrect. If size didn't matter, there wouldn't be weight classes. I have trained in several martial arts, and I have sparred against people of all different sizes. Yes, in some cases smaller guys were more difficult than bigger guys. This is a case of individuals being more skilled than others. Size isn't everything, but it definitely matters in a fight. It's just simple physics. What makes a better fighter is the fighters different skill sets: technical, physical, etc. put together with fight intelligence. If you fight someone of equal skill level to you that is bigger, the bigger opponent will most likely win. That's just how it is.

Awesome channel!