So you are arguing over the cartridge making the sound rather than the alignment. Oh please. Of course the cartridge makes the sound. What a brilliant deduction. My congratulations to you. You have now understood the first step in getting excellent sound. Let me now see if I can show you the second.
Let me try and make this very simple. A badly aligned cartridge, however good, will not produce the quality of sound I am hearing. You like word pictures (and oh such colourful ones), so maybe you will be able to understand this exceptionally difficult second step with a word picture. The Mercedes F1 car, produced the best results this season delivering 1st and 2nd in the drivers championship. And I hope this does not complicate this picture too much for you, these cars did require excellent drivers. There is no doubt that it was the exceptional quality of the car combined with the excellent quality of the driver that delivered this best performance (car+driver = cartridge). But if Mercedes had used terrible wheel alignment the exceptional quality of the car and driver would have delivered the worst result (alignment = alignment). All clear now?!
But credit where credit is due. You are amazing in that you can comment so much on something you have zero experience with, UNI-DIN.