Who's more authentic Tom Waits/Bob Dylan or Britney Spears?

Musician Jack White thinks out loud:

"I don't know if Tom Waits and Bob Dylan are as authentic as I think they are. Perhaps they're not."

..."Sometimes you start thinking that maybe Britney Spears or someone like that who's doing exactly what they want to do in the way that they best know how, is more authentic than any of those people you could mention."

Think about it.