A true rocker

People who know David Cook, a Tulsa native, say he's the real thing:

"He's the real thing," said Jeff Martinson, the owner of the Blank Slate complex of clubs in downtown Tulsa's Blue Dome district, where Cook bartended and enjoyed a flourishing musical career before landing a spot on the Fox Television program.

"He's gone out and actually played hundreds of gigs in bars in front of, sometimes, five people. He's the real deal in the sense that regardless of what happens in this competition, he'll still be out playing three nights a week."

If David's the real deal, then which contestant is faking it?
 
Carly Smithson?
Michael Johns?
Amanda Overmyer?
David Archuleta?

Everyone?