and my point is that they likely did not spend as much on 2009 minus the KERS as they did in 2011 and 2012, and likely 2013 too. 2010 I agree, as they were being conservative in the design to ensure the teams continued participation in F1. After the buyout, they put a lot of effort in to 2011, again in 2012, and again in 2013, they have certainly gone all out with the signings.
Though to be fair, they are missing the rule change.