If he's gonna keep getting flustered and not able to pull himself together and pitch out of it, then he's not a good pitcher.
First of all, I've seen Bergmann get rocked numerous times. I have also seen Hill be consistently above average. There is no contest and using Sutton to make your point will not change that. Like sportsfan said, I too am certain Sutton would tell you that Hill is the better of the 2.