I think it's luck of the draw, really. Most hatcheries don't usually breed their own birds, they rely on 3rd party breeders to do that for them, so there really isn't any sort of quality control. I believe that Sandhill breeds their own and probably some of the other smaller hatcheries.
I have 2 beautiful Yokohama's from Ideal, but one is more breeder quality and the other's definitely show quality. All three La Fleche are turning out show quality. I had two SLW from MM, one was near perfect and the other had hardly any lacing..so you never know. You can also have the best show stock from the best breeder and the chicks can turn out terrible.