I don't remember the percentage gap anymore, but I remember from school that "studies show" the only significant difference between how composers (by academic discipline) and listeners (everyone else) hear music is that composers think stacked 2nds (whole-tone harmonies, like the "cloud" and "angel" effects in cartoon music) are consonant (pleasant-sounding) and everyone else thinks they're dissonant (creepy).
This explains almost every weird thing that happened between Beethoven and Philip Glass. That aberrant period is the only "classical" music I like, so my favorite stat is 2.