We had a pattern we followed. The chicken box always got a putting green and the others would get a combination of the two. Recently we have decided to switch that after comparing box scores. Although we still use some lettuce as a base that just peeks out the sides our main focus is the parsley. It just gives you that uniformity in the box. Lettuce, by its shape, can look clunky in the box no matter how you place it. IMO
As a judge as well I will have to say that it is still a meat contest. Most I speak to do judge on the merits of the meat but its subjective. A parsley box makes the food appear to jump out at you when the box is opened. If its on a bed of lettuce it appears to be sinking into the box. As ridiculous as that sounds it's what I see. So I am not judging the garnish for score but I am judging the meat partially on how the garish helps presents it. Has anyone actually seen a no garnish box that they would give more then a 7 to? Every light to no garish box I see never gets the meat to present well. It always appears to be dumped in the box.