Why would Joba do good as a starter?

Steinbrenner is such a damn hipocrit." Oh, don't over use Joba." They created the Joba Rule. Now, all of a sudden, the Yanks didn't go 20-0 to start the season and he wants Chamberlain to pitch 200 innings a season. He's gonna be a hell of a closer, so let him develop Hank! He's already a great pitcher, just imagine what he could become with another year or two of setup work. New York won't even remember the name Mariano Rivera.