Nothing Katy Perry released has been as good as Taylor's Holy Trinity of albums (Fearless, Speak Now, Red).
I know both girls write, but Taylor Swift's songwriting talent is the
forefront of her as an artist, whereas Katy's songwriting is lost within all the Max Martin, Dr. Luke, [insert other basic producer here] influence on her music. I like songs from both artists, but Taylor Swift is consistently a decent writer whereas Katy Perry is usually a hit or miss. Taylor Swift has reinvented herself as an artist and still proved successful, whereas Katy Perry is the most bland and basic popstar out there today. She has been using the same tired formula for years, and ever since 2010, has had no artistic identity. Even though Taylor has also utilized similar producers for her poppier tunes (Max Martin, Shellback) but her influence and writing style is still
very evident throughout her music whereas Katy Perry doesn't really even have a recognizable one.
Taylor Swift can make you wanna dance and or sit at home and cry all day, whereas Katy Perry can really only do the former. Although she's had some highlights (Thinking of You being the most notable), the majority of her music gets boring after a while because it is evident that the exact same ingredients are being put into every single one of her tracks.
Both artists' careers are far from over, but right now, Taylor Swift will continue to stay winning.