Taking a more leisurely pace than "All Good Things", DS9's two hour series finale brings the Dominion war to a close and sends the characters off into the sunset in a way that TOS doesn't and TNG, with its move to feature films, can't. It's a character-based emotional roller-coaster filled with action, suspense, comeuppance, laughter, tears, and goodbyes.
Closing the book on the series, the episode has to hit a number of plot points (and a record setting number of guest stars), but in the sure hands of director Allan Kroeker (who would on to direct the finales of Voyager, and Enterprise), each beat hits at the right time, giving the war's endgame a satisfying layout and turning the aftermath into an engaging coda. With previous episodes carefully positioning the characters into different facets of the war, the finale is able to bring us its conclusion from a wide variety of viewpoints, giving us a less of a comic book close and more of a realistic representation of victory and defeat than television is known for. (How ironic for this to happen in a sci fi series!) There aren't one or two actions that will ultimately decide the lives of billions; there are many events happening simultaneously that form the conclusion, cutting off options and hemming in the losing side before the leader is finally cornered and forced to accept the checkmate.
And yet it all leaves room for the aftermath to breath. with the characters embarking on separate paths in a way that leaves no question that this is the end.