I have found that so many directors and producers in the room say nothing, and this can be deadly. It's very difficult to audition for comedy in the vacuum of a small room, but it's the only way most do it.
It also brings it back to the classroom that no matter what they do, if they put enough heart in it, they can get through anything. As soon as I crossed the finish line, I could hear them, it was like holy wow! It was amazing.