Cathal is right that superhero movies with lots of explosions at the end lack all suspense, and thus are boring.  But Superman is not like watching boulders get pounded.  Donner's Superman (1979) is easily the best superhero film Hollywood ever made. Acting and writing matter, because the details matter. Go Superman!

The basketball commentary was similar.  GSW will not win titles like the Celtics did. The next most boring thing to a perpetual dynasty is a league where no one can win twice in a row.  Dynasties of limited length at least set a bar, and provide a history worth having or achieving.