hughes has some great potential, but i would hesitate to put him too high on prospect lists because he only has 90 innings under his belt (albeit an impressive 90 innings). I would like to see a full season out of him.
Duncan is an interesting prospect. I think he is better than he has shown last season at AA last year. While I wouldn't read too much into his torrid offensive display in the AFL, i think that does speak to his talent. He has great makeup, takes walks, has 30 HR power.
They are pretty even in my mind and both have a good shot at being impact players on the Yankees in the near future