I think people can't think of any females in hip-hop that was successful because they don't really know Hip-hop. LIL MAMA scored 2 top 10 hits in 07'-08. And was the last female artist to do it.. Nobody gave her props for her success in the game being only 19 years old, and doing a successful TV show on MTV "So you think you can dance'. And Trina gets totally shaded, being the only female artist within the last year that actually released an album other than Nicki.

But yes Nicki is selling more, and got more media, so we forget about everybody else successful or not.