I feel like Lady Gaga sings more about past and present experiences making her song full of meaning and much more things we can relate to. Than you have Katy Perry who I feel just makes songs for those to enjoy and maybe 'party' to. I enjoy both, I have separate moods for both.
wow this is a real hard one lady gaga or katy perry ??? they are bolth so awesome!xd
Yet again i think id have to go with Lady GaGA!!!!!!!!!!!!!!!!!!!!!!!cool