I have watched Nigel ref at a couple of kid's tournaments and can't say that I have seen him make any bad calls. Also from your vantage point along the side of the mat or in the stands, you can probably see the match from a more wider spectrum. Where as when you ref you are right on top of the wrestlers anywhere from 2 foot to 6 foot away. It's easier to call the match from the stands then right up on the kids. I think that is something you are forgeting. And I know most coaches know this as well!