Urobuchi once said: Suisei tells a “heart warming tale”. I laughed it off because 1) it probably isn’t true and 2) it doesn’t matter whether it has a good ending or a bad one. His Psycho-pass proved that a “normal ending” can still bring satisfactory conclusion to a story. It’s debatable on which anime is better than the other, but I can say for sure that Urobuchi ended Suisei with with much more impact and fanfare than his earlier work.
Massive spoiler of Suisei no Gargantia and minor spoiler of Psycho-pass ensues!