In some ways, not a valid comparison. Google is like the yellow pages, while Facebook ads are like small space magazine ads.
However, some really fascinating “facts” here (if they are):
1) Not sure I believe that FB revenue per $ placed is higher than Google.
2) Daimler (e.g. Mercedes) spends $9MM on FB?
3) Globally, Google has 10X ad revenue of FB
Posted by Philip Emmanuele, May 2013