2. No I don't. It can be used to identify if there is a diference that is all. It cannot determine why. We would need some kind of cable test protocol set up to determine why through measurement.
3. I don't understand what the big deal is about burden of proof for an individual. If an individual makes a statement that he believes that x sounds better in his system thats all that is required.
If we are talking a manufacturer that is making blatant claims about the superiority of his wire to all else then he should be able to back it up with some data. We as consumers should demand that data and not make it easy for a manufacturer to make such claims.
4. Nope