Skeeter, I think it depends on the tournament you go to. When I was younger, I used to go to a lot of tournaments where the students of the school who was holding the match could pretty much go as hard as they wanted and if you got a hard (but legal) shot in they would warn you to "watch the control".
Once at one of those tournaments, I was sparring and I got a clear punch in and they said "not enough contact". The next time I hit him I knocked the wind out of him and it was "too much contact". Situations like that were why I got sick of the whole tournament scene. That's also why I'm looking to go full contact now. You can never escape the politics but if you out-class a guy enough to knock his a$$ out, there's not much they can do.
Another factor could be that a lot of my competing was done as a minor. They're a lot more protective of the under 18 crowd.