I LOVE Bonnie and I pre-ordered her EP but people really do give Bonnie a bit TOO much credit for the TD era. She had a hand in writing 3/6 of the singles (5/8 including the re-release), and she was one of many co-writers such as Ester Dean, StarGate, Joshua Coleman, Dr. Luke, Max Martin etc. Whereas Katy wrote on all of the songs. Bonnie has even said in interviews that Teenage Dream (the song) is something that Katy and her wrote together over and over again until Luke banned them from working on it anymore. Bonnie came up with the chorus all by herself though because Katy listened to Luke and moved on and Bonnie didn't.
But Bonnie couldn't have had those songs without Katy either, it works both ways.
OT: Bombastic slays! Kill me!
I still think that the chorus is a bit annoying, but at the same time I'm kinda addicted to it.