i agree with Number1k9, idol has done wonders for Jlo, she had the biggest single of her career recently bigger than anything she released in her prime, not to mention the many endorsements and movie roles. mariah is hurting right now, her last studio cd didnt do well, it tanked overseas, the angels advocate cd was shelved and her Xmas cd did so-so business the first year and was outsold by her first xmas cd this past year, interest for her and her new project are not high, X-factor would be huge for her right now.

@theman, mariah's single only sold 1 million copies and her cd did about 700k worldwide, Jlo's on the floor sold about 10 million copies and her cd did 800k worldwide