Thing is guys, everyone benefits from studio magic and being able to have a rested voice with 20 takes. Especially now where you can cut and paste vocal lines. None of these guys ever really sounded as good as the recording did they? A few guys could bring it but for the most part, many were inconsistent depending on the night I think. Not like these registrars are easy on the voice. I always think of Bruce on the Number of the Beast. Holy shitballs he hit some notes.
ps- i thought the dude above did pretty good given the high notes he had to hit