I think Carl is entitled to his opinion and ours to well...ours or whoever really.
Again, our bodies and physical attributes and sonic hearing frequencies too, I believe, are different from each other. Some of us see things differently from others, be it in its physical state or in a theoretical/philosophical/academic sense as well. that being said, I think we are all entitled to our own opinions as long as we do not go out there and lay a blanket claim against what seems to be the general consensus of things (and sometimes the latter may be wrong).
Again, I think the most important thing for us to do is to enjoy our music whichever way we like it, be it with more treble, harsher notes, etc. But it may never sound the same to others, just like some who have colour blindness, some are tone deaf, and well, my housemate has a weird tolerance of the cold and can't get into a similar level of 'hot' setting for the shower as the rest of us. We are all 'built' differently.
I don't think Carl has done anything pervasive to an extent of making broad spectrum remarks without quantifying his claim. sure, maybe his test had some flaws, but he made the effort and I honestly believe he is happy with what he has. He hasn't gotten angsty about things as well when people have questioned what he has done and I believe that people are entitled to question or at least he would have expected it as well, seeing that he posted it here.
Anyways, thanks Carl for your input, I hope you enjoy your music for a long time to come and the same to others. Music to me, is about the fun and the enjoyment factor and I hope that holds the same for all of us. Some find enjoyment in the analysing of music. I don't or I haven't yet
side note: I do not think it would be fair to impose our audio perceptions of things since we know, well I think at least, that we know it is all subjective. We give our opinion, what we think is best and run with it.