Yahoo provides the data for the distribution of picks in each round of the NCAA Tourney. It also provides the crowd's bracket, based on the distribution of these picks. If the crowd was in the group I am playing in, it would be the clear leader.
Nevertheless, looking over it, I'm not sure this is the crowd's bracket. I think it would need to be worked out with Bayes Theorem to be reflective of the group's choice. It would be a fun project to go ahead and work this out, hopefully there are some takers.