I like them both, but Rocky wins hands down. Better story, better charecters, better dialog (as jmf pointed out), more motivational, I get into it more.
Stallone= terrible actor, unless he is playing either Rocky, Rambo or the guy in Cliffhanger, but he is a brillant writter, and that is why Rocky is so good.
Brilliant writer sounds a little over the top to me...I think one should have written at the very least a novel or two before being termed a brilliant writer.
Brilliant screenwriter... its a different gift. He manages to convey a lot of meaning through simple words, which is very hard to do. He can write the way people acctually talk and still make you feel like something important is happening.