According to this chart, Facebook fans favor the American League over the National League by 53% to 47%, which is probably about the same as ESPN and MLB.com, at least in this blogger’s opinion. Keep in mind the chart is for 2012 and may have changed since the October post-season.
I found this great infographic on NJ Biblio’s blog. Looking at the results I had to go to the original source of the material, “Banyan Branch“, to see where these guys are from, since their second most favorite tweets were listed as belonging to the Seattle Mariners, a surprise to me. And sure enough, the Banyan fellows are based in Seattle. I doubt the chart is skewed toward Seattle because of a bias, but more than likely it’s because of the high-tech industries and rather sophisticated yuppies fast associated with the area. Good job guys!