Well, this isn't exactly a "diss" because Rated R was considered really dark because it was Rihanna. Compared to her other material it was extremely dark, but there's darker stuff out there.
Aww, mentioning Rihanna's name for relevancy is so cute.
I do love Natalia and her music, though. And her album is dark pop. But it's seriously NOTHING like Rated R (Rated R will always be better, imo), and neither is Natalia. So I don't understand the comparisons.