He's too short. Why can't a studio find someone who's above average height to play Superman.

Since I never saw the Tudors I have no idea as to the fellow's build, though that can be enhanced given time.

Dean had the build for the role but was consistantly criticized for being too short to be Superman.

Tank (who says that the success or failure of this movie will depend on the casting of a different character...do I have to say it)