yeah, the fight scenes aren't exactly an accurate depiction. but it is hollywood.
but, if you want to see some good stallone action, check into frank stallone. he actually was a fighter and is also a boxing historian. on his website, you can actually e-mail him regarding any boxing history questions. i'm thinking of doing it because boxing history is a hobby of mine.
and here's a little trivia treat for you guys. in rocky 4, sylvester went to the hospital after complaining of chest pains from taking one of dolph lundgren's punches. apparently, sly told dolph not to hold back so much during filming one of the fight scenes, and he caught a nasty blow to the chest from dolph. the doctors found sylvester to have a severely bruised chest. maybe he didn't know that lundgren was a 3 time full contact karate champion.