User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-4649443-20130403035856/@comment-4902593-20130403164400

You just answered your own question. Sure, the Romans borrowed gods from Greece but like every great civilisation Rome also has its own gods who have no Greek form. Yes, human belief is more powerful than the gods (not humans) because that's what gives god their identity, power and status.