Audio problem: At the end of the fight when Apollo tells Rocky there won't be a rematch, his lips aren't moving. Rocky's lips aren't moving either when he says "Don't want one!"
Audio problem: When Rocky is in the locker room with Spider after the first fight, Spider supposedly says (according to subtitles and closed captioning), "Hey. You really got lucky," but that's an obvious post-production overdub. His lips are saying "sometimes".
Answer: It's pretty inaccurate. Real life fighters would tire out long before the 15th round after throwing so many haymakers (knock out punches). The amount of punches that connect clean without a knock out is also unrealistic. Creed doesn't seem to ever miss with his punches. Even an inexperienced boxer should be able to see at least a few punches coming and move to avoid them, Rocky seems to have no defense at all. The reaction to being punched is exaggerated for dramatic effect (Creed being lifted off the ground due to the power of Rocky's body punches, Rocky's head being thrown back due to the power of Creed's jab). It is also likely, though this is debatable, that the fight would have been stopped prior to the 15th round as both fighters could hardly stand going into that round.
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