U.S. media spins on GDP data?

Exactly how much did the U.S. GDP grow last year? On January 25th, Wall Street Journal said "U.S. economy grew 3.1% last year," but on the same day, U.S. Bureau of Economic Analysis, the official agency responsible for the analysis and reporting of economic data, put the number at 2.5%. Which number shall we believe? With the U.S. media often leading the charge in highlighting worst-case scenarios for China's economy, are they doing the opposite when it comes to the U.S. economy?