A general power cable discussion

So some years back Audioholics did an interesting piece on this subject; http://www.audioholics.com/audio-video-cables/power-cables It is possible, under some circumstances, to cause a system to behave sub-optimally by using a poorly-designed power cable, but the main consideration at work here is simply wire gauge, and in such a circumstance all one really needs to do is increase the gauge of the cable. I am posting this as a start to an amicable discussion..

Ok, so where should the testing start (no in relation to that review)? I'm starting to think ABX is not the best approach, at least to start as their is a flaw to begin with being a human that can differ on perception and focus. In fact more than one person sitting in different places in an untreated room without system calibration creates an even worse situation. Surely we should start with two identical systems running a clean and monitorable power supply with a switch