FWIW, not that it’s worth anything, but it makes me feel better to post, so I do…
After I finish my morning cup of joe listening to Persona 3f, I climb into my SUV and go to work listening to Revel Ultimate for auto. Similar, and at times identical, listening material; I hear not much difference in the degree of emphasis of the top end. The Revel can sound a bit harsh to me at times, when I turn it up a bit loud to overcome the road noise, and the orchestra crescendo from a recording from the early days of stereo comes on. It could be a formally trained listener can hear the difference in the reproduction of high frequencies between the two systems, but I really can’t. Or, it could be that the spinorama bothers the eye a bit more than the ear. I’m fully confident Amir can measure differences that I am completely unable to hear.