Katy. Madonna didn't fall out as fast as Gaga did, and if Katy begins to experiment more while still being successful then there are bright things for her future
Lady Gaga is this generations David Bowie/Fredie Mercury.
Katy and Madonna have some similarities because they both have extremely limited talent and yet managed to get quite successful at selling their music.
Would the Kats explain why Katy is this gen's Madonna? Madonna's trademark is that she was highly original and incredibly experimental. She never did the same thing twice and always pushed boundaries (something Katy has never done, but Gaga has)