I think what Tony said was right as well, as there are many ways to train. They always say the only things two trainers can agree on, is what the third is doing wrong.

As Tony stated, with his methods there are a lot of what seem to be, requirements. Appropriate quarry, suitable open ground, confidence, mental attitude, born of good management, success at difficult slips, and so on, are all necessary for a individual to certain things on it's own accord, and do it well. I think the reasoning behind some of the new methods is trying to take any individual and do the same thing, even if it is lacking some or all of those things.