Zebo, Mike and Tek all hit some outrageous airshots that are certainly worthy of flashy highlights. But their overall value for their respective teams, reflected through all of the stats, and the plays and (inevitably) the final placements of the tournament, is less than those of b4nny's. Not a single player at i55 had the same consistent level of impact that he had - huge damage, good ubers, favourable trades and impeccable leadership through comms and plays alike.
A few people (on marketplace.tf and perhaps here) seem to have reluctance to give credit to froyotech members because of their personalities. I personally think that whatever distasteful action the player do in real life is irrelevant in consideration of his worth towards his team.