California Gurls VS. Rude Boy Teenage Dream VS. Love The Way You Lie
Firework VS. Only Girl
E.T. VS. What's My Name? Last Friday Night VS. S&M
Part Of Me VS. We Found Love
Rihanna's because atleast she isn't as desperate as Katy To Get Those #1's. I didnt see Rihanna discounting or remixing Cheers to get it to a higher spot or to #1. And Knowing that it was a 6 or 7th and final single, it wasn't gonna go to #1. But Katy Knew That The One That Got Away was a 6th single and was going to be weak so she discounted it and remixed it. yet it only peaked at #3.
Anywho...
California Gurls<Rude Boy
TD<LTWYL
ET<WM
LFN>S&M
POM<WFL
VS. We Found Love