Ah yes, Jerms, I spend a certain amount of time there myself.
In fairness, my take on this is that we know a great deal about our vaping liquids and equipment, but what we know with certainty---which is to say, grounded in validity and reliability---is limited. Our experiments to compare A with B (whatever they may be, and whether as actual head-to-head testing, as you were doing with rayon wick vs. KGD cotton wick, or informally in the course of things as part of our ongoing ambition to find or create a better vape) are affected by so many uncontrolled/uncontrollable/unknown variables that our results are often more anecdotal than we realize at the time. Of course, that doesn't stop us from posting our conclusions, which are read by others and, on occasion, become part of the accepted wisdom. Sifting through all those presumptions to distinguish what we truly know from what we think we know (but don't) is tricky business and a very slippery slope.
Few, if any, participants on this thread would disagree that natural tobacco extract flavoring is a fundamentally different (and better) vaping experience than synthetic, lab-based tobacco flavorings. That seems obvious and true. Not that some of us don't love the occasional synthetic tobacco juice (since we do), but overall, NETs are clearly superior to artibaccos in authenticity and satisfying flavor. (Were that not so, this thread would never have survived to its current War and Peace length.) Past that, however, things get murkier. Best extraction method? Fresh or steeped, and how long? Preferred delivery devices? Ideal wattage? Most effective coils and wicks? All the choices and variations through which we hope to bring out the best of our NETs seem to me much less cut-and-dried than we sometimes assume.
All of which is fine, but it does result in the occasional ....-kicking we get from a complex and elusive reality that leaves us scratching our heads, feeling foolish perhaps, and thinking, "what the hell do I know anyways?"