At the 10 second mark, the ad shows what Romney said. It then accuses Romney of lying and misquoting Obama. At the 35 second mark, the clip shows what Obama said ... which is exactly what Romney said Obama said.
Video embedded below.
"Nevertheless, the Obama campaign, in the ad, says it's not true. "The only problem?," the ad text reads. "That's not what he said." It then turns to Obama, from the same Roanoke campaign speech, who said, "If you were successful, somebody along the line gave you some help. There was a great teacher somewhere in your life."
Which is true. Obama did say that. But he also said the line that Romney says he said-- "If you’ve got a business --you didn’t build that. Somebody else made that happen."
And, in fact, later in the ad the Obama campaign actually plays the clip that Romney quotes of Obama, at about :40 second spot.
"Mitt Romney will say anything," the ad concludes. It turns out, he'll even say Obama's words when quoting him. "