I always tell people that they might not be interested in the differences, but they will certainly be able to hear the differences. So far nobody who has heard my system has denied that it sounds substantially better than anything they've previously heard, and better than they has imagined a hifi could. But most say it's not important to them to have a similar sounding system. That's cool ... we all like different things.
If someone positively denies the difference and then refuses to listen, well just leave them to their ignorance.
If someone positively denies the difference and then refuses to listen, well just leave them to their ignorance.