The New York Daily News reports that longtime rivals Mariah Carey and Whitney Houston were set to unite for a CBS special in an effort to boost both of their careers, but Whitney backed out. “She wasn’t ready,” says the source. “Also, do you think that CBS would have promoted it as anything other than the ‘Two Freaks’?” Another source countered that it was Mariah who turned down the offer. “They didn’t want her associated with Whitney, with all her troubles,” said the insider. “Considering Mariah’s baggage, why would you want to invite comparison?” Whitney is reportedly in talks to have a special on ABC.