Sony will most likely project another 13 million units for 2011.
The main reason is that they ended fiscal 2010 with no stock at retailers so they can easily ship 1 million more consoles than they sell to customers in 2011 if they have to....( by comparison they most likely shipped less than they sold to customers in 2010...)
PS : Software projection for 2011 for PS3 doesn't make a lot of sense, software tends to peak the year following HW peak...