Whenever a cook enters more than one sample type for judges to try, judges are taught to try each as long as there is enough samples for all six judges. However, I've never been taught or taught a class that told someone to score the better piece. Different samples in an entry tray could either help or hurt and entry. I've heard judges comment that if they would have stopped at the first entry the score would have been better. But because the cooker put in all types of samples (sliced, chunked, etc) the judge takes all samples into consideration for a score. It also works the other way around. I know that a judge's score will go up if the second piece of sample was better than the first. Depends on the judge. They are to be taking the whole entry into consideration, not just one piece.