If you do this again next year, and Rihanna will definitely be the top
And Katy will be in the top 10 (If her next era starts this summer)
To be fair when you see a massive column of 'X' in an artists's table it means the methodology hurt them quite a bit. Obviously not Kworb's fault though. Madonna would have a greater lead otherwise. The omissions from Spain and Italy will be in the thousands.
That said Rihanna's progress is phenomenal. Diamonds especially
Single Ladies was a B-side release to If I Were A Boy to begin with. And a song's globalness is not only limited to the charts. All the parodies done all over the world prove the impact of the song.