Well of course the rating on the economy is not going to show any difference! Unless people were somehow thinking that killing Bin Laden would somehow create jobs.
Click the link and read the whole thing. He's got better ratings on terrorism and worse ratings on the economy. No surprise, really.
He deserves higher ratings regarding his actions against terrorism. Unfortunately for him, the economy will determine the election. Not to say of course, that the economy can't turn around some by the election. In that case, I doubt he'd have much problem getting reelected.