Of course she also said that neither Barack Obama nor Joe Biden would be qualified. In fact, the only major presidential competitor this year who would be qualified for such a job is Mitt Romney.
So this revelation doesn't matter in a relative sense. I would argue that it doesn't matter in an absolute sense, either. Why? Because this isn't the damned Soviet Union, that's why! The United States does not have a centrally planned economy. It never has. This distinction, however, seems lost on the Obama campaign:
Predictably, the Obama campaign pounced. "If John McCain's top economic adviser doesn't think he can run a corporation, how on Earth can he run the largest economy in the world in the midst of a financial crisis?" spokesman Tommy Vietor asked.
Hell, even the Soviet economy wasn't run by one person. It was operated by a hierarchy of economists and politicians. But if anyone can do it, it's the Messiah, right?
For fun, here's a list of centrally planned economies (from Wikipedia):
Great Leap Forward China
Resounding successes, all!