I always had a hard time believing Miley was the biggest pop star. Lets be real, most of the people watching her views or talking about her is in a negative light. That's like saying Casey Anthony was a big powerful celebrity.
It is so damn easy to get people to say negative things about you, but getting near universal praise like Adele, Beyonce, or P!nk that's difficult to do and that's REAL impact. I much rather have Katy Perry aim for that kind of success than aim for being a joke in the music industry like is Miley has become.