Facebook is more like a wolverine than a docile rabbit. Google is a bear; much bigger and should be more capable, but the wolverine is 10x more violent and will easily back it down in a fight over the salmon. The wolverine is quick, fearless and single-minded ( "eat!" ) while the bear is large, slow, probably well fed, and therefore isn't nearly as tenacious. With that analogy, who you should bet on is clear.
