It has nothing to do with her losing streak. It has everything to do with her ranking #3 to dead last in her two nominated categories. Lorde is taking SOTY, and JT or Lorde is taking Pop Solo. Let's face it: Katy gets nominated because she's so successful, but she is never ever #1 in the race... ever.
Weirder **** has happened but I agree that her nominations have a lot to do with her success, like most others.
Roar just contains every lyrical AND musical cliche present out there. If it wins a Grammy, then I will stop reading any review or watch any award show for the rest of my life. (unless the critique is by Legend G of course)