Sia's team is very smart for discounting Cheap Thrills ... but i guess that Calvin/Rih have no chance of going #1 next week
Demi's team, on the other hand, really messed up ....if they realeased it on iTunes right away, with #1 selling less than 100K, it could have go straight to #1 .... now she is going to get overshadowed
Very impressive for Britney so far, but no wonder, since it is much better than WB & PG were (still not even close to her older material tho)
As for Katy, i am pretty sure that when US wakes up and sees this surprise release (+video is coming), she will go straight to #1