Bob, take what I said in context. I am not talking about trying to cover boards. If you want to carry consistently, you have to get the ball into a strong roll. Once the ball hits the dry, for sure it will begin to change phases and direction. A ball rolling earlier will change directions and create some angle. While a strong pearl may react more violently once it hits the dry, if you do not have a clean release with the correct rotation, the ball will not roll into the pocket and leave some nasty leaves from what I have seen.
Of course, Norm Duke proved what you are saying about using a strong pearl, but that was Norm Duke with his extra clean release and almost flawless ability to control the rotation that he puts on the ball, depending on the conditions.