I'd love to see this for brands like Nike and Adidas, as the above doesn't really tell us that much about which sports Facebook users get excited about. This is what Facebook did say, though:

In February of 2009, the Steelers won the Super Bowl, and in October the Yankees won the World Series. Which did people talk about more? Well, the Steelers reached a higher peak value (6.0 / 1000 vs. 3.7 / 1000), but they only played one game. The Yankees were discussed a bit less per day, but over a longer period of time. So, are FB users more football or baseball fans? We don't want to start anything, so we'll just call it a tie.