Players struggling their first time (or two) up isn't uncommon. Those guys becoming All Stars, Cy Young finalists, or HOF'ers.....that's not. If you want to believe the Louie Varland will become Randy Johnson don't let me stop you, but the names you're throwing around are by far the exception and not the rule.
Nobody is dismissing him, but counting him as a success story right now is ridiculous. He's been worse (in a shorter period of time) than Bundy or Archer was last year, and I'd argue that using either of those two is setting the bar too low to begin with.