Overall Nicki is a pop-star that stole from the books of numerous artist during her run (i.e. Kim, Foxy, Gaga, Katy Perry, Rihanna...) and once she ran out of other artist to duplicate, her reign slowly came to an end and became boring tbh. This doesn't take away from her talent and gifts because she does deserved to be on the list but not at number 1. Billboard knows what they were doing when they put this out and knows very well that this list is some BS. Trina should easily be on this list at 10 imo. I'm not much a Trina fan but her sound is so relevant and present in today's rap where many girls sound and look just like her.