There's probably a reason for it
I don't doubt he has a reason for it. However, I sincerely doubt that the reason is not a stupid one. This guy is basically saying that "Joe Bob's" arrow with a 125 gr head with a total arrow weight of 400 grains and flying 260 fps is going to out penetrated my arrow with a 100 gr. head with a total weight of 444 gr. flying 280 fps merely becasue the head weighs more. I don't care what his rationale is that is a stupid rule. Even if he was a big FOC advocate he still wouldn't make sense. Broadhead weight plays such an insignificant role in arrow penetration when all else is equal that it's rediculous that we are even having this conversation. So again let's clarify, regardless of his own personal reasoning it's stupid, plain and simple. It wouldn't matter if he was Canadian, Mexican, Arabic, German, Spanish, Portugese, Guatamalan, Chinese, Mongolian, American, or French, that's a stupid rule.