I wouldn't underestimate Katy Perry, she has the GP on her side.
GP >>>>>>>> A large fan base.
This is true but Katy will need to change her sound. People don't want the Dr Luke bubblegum type stuff anymore (although Katy did get his best stuff post-Avril).
On the platform front, Sony Pictures Classics' Blue Jasmine was off to a very strong estimated start of $612,767 from six locations in New York and Los Angeles. That gave the Woody Allen directed film starring Cate Blanchett a massive per-location average of $102,128 for the frame. If the estimate holds, Blue Jasmine will just outpace the $599,003 six location platform launch of Midnight in Paris back in May of 2011. Blue Jasmine will expand into additional locations next weekend and throughout the month of August.