Found these news from the web:

"EA released their quarter 4 fiscal year 2011 financial results today, which announced that Battlefield 3 pre-orders are up 700% compared to Battlefield: Bad Company 2 in 2010. Looks like all the marketing for Battlefield 3 is already paying off and this is just the beginning.

Also included is that Battlefield: Bad Company 2 sold over 7 million units to date including digital copies. "