That doesn't seem too impressive. Steam had a revenue of 1 billion in 2010, and somewhere around 2 billion in 2011, with 40 million customers at the end of 2011
In other words, the average amount paid per Steam user is somewhere around 50 dollars, while the average for an origin user is just 11.
(As a source, the numbers are all in different posts in here: http://gamrconnect.vgchartz.com/thread.php?id=138565&page=1#35)







