This is very true, and that goes to show that those people's eye for quality dogs wasn't as good as they originally thought. That is the heart of the entire matter. I've known a lot of people whose dogs show well on one another, but they don't do so well outside the yard? Why is that? The quality isn't there, and the owner isn't able to distinguish chicken salad from chicken shit. If a person has seen his fair share of quality dogs, both from his own yard and others, they should start to see a pattern of quality. If they see it and don't learn, well, there's no help for those people. But again OG and Skipper, that has some more to do with the owner not knowing what good dogs are as opposed to just staying within their own yard.
If you have a bitch that sticks around for 30 minutes with a dog like you describe, you don't have just a good dog. You have a MATCH quality dog. If the yard is predominately made up of good, quality dogs, then you really have no reason to leave the yard when schooling or checking dogs when you have the ability to do that, at home, if you like. If you have a match quality dog out of that bunch, then jump on it. I'd rather show 2 or 3 match quality dogs and win multiple times than show two are three average dogs just to say I'm showing dogs.