I've spent quite a few hours with WordPress and Drupal and I know just enough HTML to be a danger to others, but allow me this tiny example of Muse's capability:
Like most sites, I have a nav menu across the top. Seven menu elements, three states per element. WordPress and Drupal of course allow you to create these, but at great cost of time and hair and only within the limited constraints of the whatever theme you're using. Muse made one exactly to my specifications in about five minutes. Four and a half to learn how, and thirty seconds to actually implement and style it.
A week or so later, I decided that I'd like the same menu across the footer, too. Having no idea how to do this other than repeat the previous process (which I'd forgotten and would have to review) I said to myself "WTH, I'll just try alt-dragging the existing menu to the footer."
It worked. Links intact.
"Holy Crap!", I exclaimed aloud.