The thing about “bitch” is that had officially been relegated to the category of “Curse Words” by whoever is in charge of that kind of thing. “Slut”, although quite a rude word and not a very nice thing to call someone, was never an “official” Curse Word.
On American Television use of certain words is generally not decided on a case by case basis. Broadcasters feel much safer having a list of words they know they can not use. All of the Curse Words are on this list. Of course there are plenty of other rude words, “slut” being one of them, but they still get to be on T.V.
In social interaction “bitch” has evolved a broader meaning. Women have begun using the word as a term of empowerment and endearment much like the way many young black people use the term “nigger”. “Bitch” is now used enough that much of the fire has been taken out of it.
“Slut” is not defined nearly as broadly as “bitch”. Slut has a very direct and definite meaning so it will pretty much always be received negatively- but since it was never an “official” Curse Word, we get to use it on T.V.
So, odd though it may sound, “bitch” is worse on T.V., “slut” is worse in social interaction.
HOWEVER
“Bitch” has been used in primetime broadcast T.V. for at least 10 years now. I am surprised to hear that it was censored. Perhaps, this is because it was daytime T.V., or perhaps the producers of that particular show have their own, more strict, set of standards.
OR
Are you sure the word was “bitch”? If it was beeped out how can you tell? Did you get a clear view of her lips, making out a clear “b” formation? It is possible that instead of using the word “bitch” she used the word that, to American ears, is undisputably the most offensive pejorative word applied to women:
Cunt
Run a test sometime. Call an American woman a “bitch”, then call her a “slut”, then call her a “cunt”. Note the difference in reactions. I guarantee you that the strongest reaction will come in response to “cunt”. In fact, in the U.S., “cunt” may be the final taboo. I distinctly remember in one of Cecil’s columns (I’ve tried seaching it with no luck, maybe someone else can find it), the word “cunt” needed to be referred to. It was directly related to the subject matter and yet Cecil spelled it “c*nt”. Now, I’ve seen in many Straight Dope columns the words “fuck”, “shit”, “asshole”, and when relevant to discussion “nigger”. Yet, when it came to “cunt” they wouldn’t print it without replacing one of the letters with an asterisk.
Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt Cunt