Very often on RFF (and also in this thread) these discussions are about used gear and money. Expensive vs. cheap, "gear is cheap for a reason", "you get what you pay for", etc.
Let's take money out of the picture: you can buy today very similarly performing film cameras and lens combos for a vast difference in price; for example, a Nikon F or Olympus OM1 with 50/1.8 (combo costs between US 150 and 200) will be technically on par with, say, a Leica M2 or M3 with 50/2 Summicron v3 or below (as a combo, between US 1500 - 2000 these days).
The fact that some prefer the Leica, at least for many applications, and that they are ready to pay 10 times more, shows that technical quality is only a tiny part of the picture. For me, often, the Leica is more fun. Which sometimes translates to better photos. A camera is not only a light tight box.
People try to rationalize "fun" into quantitative discussions, but it's pointless, since it's personal. Also, when money is discussed, envy will rear its ugly head. Roger often talks about "quality threshold". I care more about my "fun threshold". And I also do my own tests and comparisons, often because I want to understand why I enjoy some gear, and other not so much.
So there, my 2 cents.
Roland.