People doubted the collaboration being real, because he never collaborated with a Popstar before. Rihanna is the first. But nobody ever thought it wouldn't work, people actually thought it would do great on the radio thanks to Rihanna.
Britney and Eminem just don't mash-up, there's no chemistry. Can you seriously imagine Britney singing LTWYL?
If Britney will collaborate with a rapper, it probably should be Pitbull or T-Pain. Nicki would work, too.
Ok and no if Em and Brit were to do a collabo it would need to be more upbeat 4 sho.