That's not about rule sets, John. That's about etiquette, and cultural reactions to breaches thereof.One time a guy used pull guard on me. I dropped my elbow right on his throat. He was very mad and asked me why did I do that for. I told him that in Chinese wrestling, to use pull guard is a no no. In the old time, by using pull guard in a Chinese wrestling field would cause "fist fight" after the sport.
Different rule sets for different sports can cause problem. It's better to understand the difference before the match starts.