We probably agree on more than we think we disagree.David Levene wrote:
We disagree again, all that matters is winning the match (obviously within the rules).
Given the choice of concentrating for example on my weight distribution or on my sight alignment I know which I would go for. Mucking up the former would possibly lose me a point, two at the (unlikely) very most. Muck up the sight alignment and the loss could be much more.
I'm just puzzled by this concept of only being able to do one thing at a time. Why can't I have an even weight distribution AND keep the sights aligned AND have good trigger control AND maintain a constant grip.
As to the training aspect some shooters will naturally be better at certain fundamentals than others and will have to devote more time perfecting the weaker fundamentals (but that doesn't make them anyless or more important than any of the other fundamentals). To shoot 580's and 590's you pretty much have to be near perfect on all the fundamentals.
The group size difference between shooting 550 and 580 is not necessarily that big, just a few mm's. But those are the thoughest few mm's around.