It just may be that your system isn't showing those differences. Also, and I find this hard to explain clearly, but basically put, I think many people when comparing products listen to different aspects of the sound. Some listen to what it placed in front of them by the system, or follow specific instruments, or certain aspects of those instruments. It's obvious from some people's comments that they listen to the tonal balance of the system (treble or bass level/intensity) and not to the more important aspects. Others listen to what's also going on behind the main sound presented by the system, the ambience, soundstage size etc. Listening to certain aspects of the sound and not others isn't wrong, but maybe differences may show themselves in aspects that some people aren't listening to.