So I am not against simple music. I am only saying that Bach, Bruckner, and the like, have this level of simplicity and beauty (for Bruckner just consider the slow movement of his 6th Symphony: it is breathtakingly beautiful even for the completely uninstructed in music; or the famous Mahler Adagietto), AND also hierarchical structural complexity. Therefore, it is silly to compare, because of course, by these criteria, 'classic' music is better.
What I really miss in rock and pop is the following. Let's take the second movement of Beethoven's opus 111. You can marvel at the variations by themselves. But, after listening for the first time, the music is plain odd, and seems incomprehensible because there are too many things happening.
Then you try to understand the emotions that spring for each variation and to relate them one to the other; you get three or four groups of emotions. Easy going confidence and elation leading to absolute self confidence and enthusiasm; them despair, and towards the end, whimsical soul searching, leading to the last variation, which just says that it does not matter.
I cannot possibly give the sense of the music using words. But this kind of relations actually makes us grow as persons because it makes us understand - bodily understand, not through words or mind alone - many emotions we never would have felt left to ourselves.
Exactly the same thing may be said of most of Buxtehude's really good organ works.
Bach is a little different because it is so understated, but just consider his best fugues and you will understand what I mean: in about four minutes you are crushed to despair, risen to hope and God, and in the end despair and bliss are mixed and you face a mind boggling coincidentia oppositorum - meaning that opposites come together. In this sense, Bach is really cosmic: a kind of musical Newton.
Now if all this was obtained at the expense of melody I would understand that one might like a bit of Simon and Garfunkel or Candle in the Wind (perhaps bad examples). But the magic thing is that it is NOT. In terms of melody I have yet to find the equal of many Chorales, Bach's Arias (and the G major Sarabande) or of Beethoven's Hammerklavier or opus 132.
So I really think I am not being pretentious: I'm just saying that the great composers make you emotionally richer and make you develop as a person to a much greater extent than rock and pop.
I hope, dear Joe, that I have qualified what you interpreted as 'ranking': it is not about better or worse, it is about differentiation and inner richness.