Right. Exactly. We can hear the difference. Period. Why you then go on and on with all that rhetoric about objectivity and measurements is beyond me. Surely you see how it only weakens your case?
Actually, you think you can hear the difference, but that doesn’t mean there’s actually a difference. Many psychological studies have investigated this. So, no, it doesn't weaken my case at all. You could perhaps think of it like a placebo effect. For example, there have been studies with wine tasting that people who are blind tasting will score a wine higher if they are told it is expensive, and lower if they are told it is inexpensive. Yet in both cases they were tasting the same wine.
In short, the imperative is for those claiming that they can hear a difference (based on cabling) to actually be able to prove there is a difference... such as through instrumentation that can measure that difference or by being able to consistently identify the the supposed higher quality cabling in a blind test.
