Now that "Somebody That I Used To Know" has finally reached the summit on US iTunes with a 50% lead (and could be even more after their SNL performance this weekend), with increasing airplay and inching closer to "We Are Young"'s OnDemand streaming points, which will claim the #1 on the Hot 100 next week?
Receipts (as of April 11, 2012):
Nielsen BDS Airplay
"We Are Young" - 120 million
"Somebody That I Used To Know" - 61 million
Digital Sales
"We Are Young" - 390,000
"Somebody That I Used To Know" - 311,000
OnDemand Streams
"We Are Young" - 1.1 million
"Somebody That I Used To Know" - 1 million
VS 
