Clausen has quite a bit on his side, IMO.
Actually Clausen has shown very little at this point and his mechanics are poor. The best thing he has going for him is that Newton hasn't done anything at all.
That isn't to say that Clausen can't prove to the coaches that he can be a starter or that last year wasn't a good reflection of his capacity. Simply, that to say he has a lot going for him based on last year would be a huge exaggeration of what occurred a very optimistic assessment of his performance.