I think we overrate the people we like in this way. Outside of the obvious suspects - the Kiss's, the Phil Collins', etc. - you put most of the musicians we like here up there and it's the same thing.
Funny thing was, I recorded "Get The Led Out" from Red Rocks on PBS (you know, they play the video and have ads in between for PBS donations) and after the show ended, the next one was "Joe Bonamassa Live From The Ryman". My wife - who's pretty musically aware - watched a couple minutes of that not two or three nights ago, then when Bonamassa showed up on TTTT (we watched it last night) she had no idea.
Some you'd get just from the "aura"; you put Geddy Lee up there and people will know it's a rock star even if they don't know "Geddy Lee from Rush". You put Neal Morse or Tony Banks or any other musician that doesn't have an obvious identifier to them (long hair, tats, dress like Stephen Tyler) up there and no one is going to know who it is.