I really dont know... by that time Adele's AI would be huuuuuge! I guess 150M and Katy's AI would be 0... and also... Adele's performing too so she would have a boost on her sales too. Katy won't be able to sell 150k more than ADELE... And the same would happen with Kelly!
It would be a really hard climb to the top spot for Katy next week...
Katy is going to get a lot of airplay. 8 million people already have SFTTR. No one has POM (the final version) and only.few people have the demo.