2010-2011 Caifornia Gurls vs Rolling in the Deep Hey, Soul Sister vs Party Rock Anthem Love the Way You Lie vs E.T.
Dynamite vs Moves Like Jagger Airplanes vs Give Me Everything OMG vs Pumped Up Kicks
Not Afraid vs Someone Like You Just the Way You Are vs Forget You
Break Your Heart vs Super Bass
Need You Now vs Born This Way
2012-2013
Somebody that I Used to Know vs Blurred Lines
Call Me Maybe vs Thrift Shop We Are Young vs Radioactive Payphone vs Cruise
Starships vs Royals
What Makes You Beautiful vs Roar
Some Nights vs Just Give Me a Reason Stronger (What Doesn't Kill You) vs Can't Hold Us
Gangnam Style vs When I Was Your Man
One More Night vs Stay
edit: I think this is what you meant i'm not sure lol
I'm going to count this vote for all the rounds it applies since it's not fair to not count it: it was the first post & I was still setting up the thread, so it was confusing.