But you're comparing Gaga's GLOBAL sales with Katy's US sales

great!

not the pressed coming in here with their lack of basic maths

According to IFPI, Billboard and now Microsoft she eclipses Katy by far.

Let's not forget the fact that the only place Katy has more single success than Gaga is USA.
Gaga has sold more singles than Katy in each and every huge market besides USA + she is not that far behind in the USA.

Katy has yet to have a hit that sells more than Poker Face or Bad Romance WW + Gaga has more 10M sellers WW than Katy.. how hard is it to grasp ?

With less albums than these pop gerls

truly the Diamond Chanteuse of our generation
---------
haters can stay pressed even during her so called 'flop' era

When did Katy sell 10M albums in USA and 90M singles she is 72x platinum and that is with STREAMING

Queens having the top spots

Katy has not sold 90 Million singles, she is well over 100 Million with the PRISM era. Her album sales stand at 13 Million as of now to.

Yaaay congrats Gags her TF(M) + BTW singles were truly MONSTROUS

yes it did and if you add up it's sales (3M albums and let's say 25M singles even tho it's not that much) she is still behind Gaga

Yes, in the OP it is stated that these receipts are before PRISM. you can check my post above this one, to see that even with PRISM receipts, Katy is still far behind.

13M albums vs 27M albums
115M singles vs 130M singles

...

Stopped reading after "My calculations" The exited thread when i read "According to microsoft"

Last i checked Microsoft did NOT calculate single/albums sales. Thats was Billboard, soundscan and RIAA


Any data Microsoft has was from a press release

Congrats Rihanna and Gaga!

just take the sales from Billboard and add the ARTPOP sales, you will get the exact same result as Microsoft did. not that hard

So you exited the thread and then posted the comment ? Interesting