Two families, $200,000, and any number of difficult decisions. It is a well-worn recipe for game shows and reality television alike. In this regard, it appears that CBS’ new show, “The Briefcase,” is no different from its predecessors. However, the context this formula inhabits has sparked a growing controversy around the show. For, in this case, the families are grappling with poverty, and they must ultimately decide whether to keep their share of the money or give it to the other, equally struggling family.