Not much of a difference, I expect this list to become fully Rihanna by the time all her new songs leak:

10. Shakira ft. Lil' Wayne & Timbaland - Give It Up To Me
09. 3OH!3 ft. Katy Perry - Starstrukk
08. Jay-Z ft. Alicia Keys - Empire State of Mind
07. Britney Spears - 3
06. Rihanna - Wait Your Turn
05. Space Cowboy ft. Paradiso Girls - I Came 2 Party
04. Rihanna - Russian Roulette
03. Owl City - Fireflies
02. Rihanna - Hard
01. Lady Gaga - Bad Romance