Well lots of people have compared the instrumentals to the TG and AG choruses and they are quite similar, but this example was really a shittily edited way to show it.
Dr Luke didn't produce American Girl. Besides, lots of pop songs use the same chords and composition, plus Bonnie wrote both songs anyway. Its a successful formula, why change it just for the sake of changing it.
Besides, lots of pop songs use the same chords and composition, plus Bonnie wrote both songs anyway. Its a successful formula, why change it just for the sake of changing it.