The problem with this is that it's way too easy to to tell the difference between power cables. Even non audiophiles can hear the difference. This is also 15 years ago. Manufacturing has taken such a leap between then and now that even if it was in doubt then, it's certainly not now. Now it's simply a matter of taste, and the better way to represent the reality of cables is that it's subjective, they do sound different, and even though everyone has their favorite cables, no one can agree on what sounds good, much less what makes them sound good. But in general, an better cable will sound "more agreeable" to more people.

I also agree there are a lot of garbage overpriced cables.

I think it's important to remember cables are not measured under appropriate loads, and they aren't measured connected to real equipment.

The measuring equipment falls far far short in the Audio world. Take for example the Audio Precision APx555B. It's the best audio analyzer in existence, and if you go to audiosciencereview, there are now DACs that have measurements that are below the measurable threshold for this machine in certain regards.

Power cables are the same. Not measurable in a meaningful way.