This article explains the difference a bit. It was revised down to -3.5%.
http://useconomy.about.com/od/grossdomesticproduct/p/GDP-For-2009.htm
IE, worse than what the other source had.
Thank you. That helps. I guess the bottom line is that no matter what the real GDP figures may be, once Obama is reelected, they will be routinely adjusted to reflect rapid growth and a booming economy.