"not feudalism, because these lords are men of God", etc.
lords claiming some rights supposedly ordained by god is quite different from a democracy that enacts laws that protect the rights of its citizens, especially the weaker ones. just because that doesn't happen in the US doesn't mean it can't happen, because it actually does in most of europe and other countries too.
They really aren't that different. Laws are twisted and changed and ignored by powerful people, whether those laws are divine or constitutional.