What you're sort of describing - having more of the higher frequencies resonate together - can actually cause intermodulation distortion (which itself can be in

What you're sort of describing - having more of the higher frequencies resonate together - can actually cause intermodulation distortion (which itself can be in the audible range), which can make it sound worse... I haven't had time to check the linked article but if it's the one I'm thinking of I'm pretty sure it goes into this. In the end though, double blind testing (again, I think mentioned in the article) shows that there's a threshold (a bit below 48kHz, probably why 44.1kHz was chosen for CD audio) after which people cant distinguish between higher sample rates at any more accuracy than randomly guessing.