iron yuppie
ONE love, blood, life
Well, people bought tickets for Elvis performances. Therefore, I would hope for their sake that Elvis stood out; they would need new glasses otherwise. That's why solo acts should be discounted from this discussion...stand out from what? The backing band full of stock session players?
Okay, but how then does Bowie, whom you mentioned earlier, fit into this equation? I doubt that many people went to see a Bowie show for Mick Ronson, awesome though he was.
However we define "frontman," I think that the influence of Elvis on rock performance cannot be denied. Almost all of the frontmen that we have mentioned cite him as an inspiration - Plant and Daltrey especially.