There's a difference between a claim that a country is unique for some reason (everyone has one of these) versus thinking that this makes them superior or entitled.
American Exceptionalism even has a creation myth and a pantheon of gods. It's something else entirely.
"There's a difference between a claim that a country is unique for some reason (everyone has one of these) versus thinking that this makes them superior or entitled."
By your own definition, last century saw overt nationalistic exceptionalism in at least Japan and Germany, also with an associated creation myth and pantheon of gods. Depending on how thin you want to spread it, I think there's a good case for throwing in Italy and Turkey/Ottomans and probably all the European colonial powers.
American Exceptionalism even has a creation myth and a pantheon of gods. It's something else entirely.