The thing is if you watch it several of Bruce's "fuck" and "motherfuckers" are probably dubbed in after the fact -- don't worry, it's Bruce -- but still, it's kind of obvious. Like when Maggie Q falls down the elevator shaft -- I hope people who are reading this thread have seen the movie -- there is an added "Fuck you, bitch!" that detracts from his triumphant yell a moment later.
And I'm really nitpicky, but I also am not a huge fan of the "motherfucker" at the end, the big one -- I think you could easily dub in a louder, more enthusiastic "motherfucker" from one of many of Bruce's movies and it would be better. But these are just suggestions. It will probably all mean more once you've seen the Unrated version.