It depends on the rules being used, and how well they are enforced...
In the 1992 (?) AAU CMAD National Championships in Tulsa, OK, there were a few judges who were making their calls based on their own agendas.
We had one of our more senior students get hammered and pounded during his sparring match, because the teacher of his opponent was one of the ring judges and refused to call any of the illegal blows that were being thrown. We asked our student why he didn't just up the ante and fight on the same terms, and he replied that he wanted to take the moral high ground and stay true to the rules.
Amusingly, in the team sparring later on, when that student, myself, and a junior student were warming up, several members of another school came up and asked if we were the team entry for our school. We answered in the affirmative, and they walked quickly to the judges table to withdraw their entry... Apparently, as we discovered later, having seen the amount of punishment our senior student could take, and seeing the size of our junior student (who was rather large and muscular), convinced them that in their opinion they would not have fared overly well...
At the same time, however, at the Tat Wong tournament in SF back in 1997, our people were given quite a poor ruling by the judges in the Xingyi forms competition. The fact that none of the judges present actually knew Xingyiquan notwithstanding, and that the students who won had done flashy wu shu style Xingyi as opposed to the more traditional method we practice, amounted to a good reason not to participate in future events...
Gambarimasu.
:asian: