I agree with Smkie, staring down a pup does nothing IMO neither does throwing it on its back, if you were assessing a pup, lay it in your arms on its back, making sure the pup knows its safe, you want a dog to actually look into your eyes not turn away, a dog that actually looks into your eyes will be an easier dog to train, but any dog in the right hands , with the right training, can be fairly sociable, one of my dogs was acording to the "test" was aggressive. dominant, probably least likey to bond with, she has turned out to be the most friendly sociable, easy to be with dog I have.and thats not just down to my handling her or training her, its down to the fact that sometimes the test are wrong IMO.
Mo