Rude Boy vs. California Gurls
Love the Way You Lie vs. Teenage Dream
What's My Name? vs. Firework
Only Girl vs. E.T.
S&M vs. Last Friday Night
We Found Love vs. Part of Me
Diamonds vs. Roar
Rihanna, I guess. But if I didn't compare each side-by-side it'd be a toss-up. Like, I loved almost every #1 from TD, but Rihanna's lead singles are always insanely addicting.
