This really needed some crosscutting of Bush using the same line, which I have no doubt has used in front of cameras the same amount, as well as McCain saying "The Economy is not my strong suit". In any case this a wonderful use of his own words against him.
Also, the fact that he used the word "fundamentals" each and every time means that he wasn't actually talking about the US economy as we see it, but rather that he believes in the underpinnings of the American economy. That is: Capitalism.