So, if I wrote a (bad) script where a crew of any of the series defeated the Q continuum, and took all of its knowledge and found the secret to everlasting life as a result, and somehow my script got accepted and filmed, would that top Voyager in its turn?
Not necessarily.
However (and whether you like it or not), it would have paved the way for future stories on how the UFP may have benefitted from that knowledge and changed it in the process.
In essence, you'd be writing your characters as people who left a bigger mark in Trek's history and might even need to be addressed again at some point.
Ds9 and its crew hadn't really done things like that.
War with another interstellar power? It happened.
Would it be nice to learn what happened to the Dominion, and some of the characters from Ds9?
Sure thing... but its also possible some other Trek will address that (Prodigy might still).
I don't rate a show by the achievements of its crew (it's relatively simple to crank that up to unrealistic levels in a story, as VOY did in my eyes by having them consistently defeat the Borg ), but by the quality of its writing. And in that sense, I still don't think VOY can hold a candle to DS9.
By that metric, ALL of Trek contains 'unrealistics levels in its story' to varying degrees. DS9 is no exception... in fact, it had multiple low points which made it utterly BAD to watch.
And unless I'm remembering things incorrecty, the main cast of virtually ANY series always managed to survive (except of course Jadzia who was written out of the show and therefore killed).
VOY also never 'consistently beat the Borg. In fact, in most of their encounters with the Collective, the crew barely managed to escape with their lives intact.
By the time VOY went up against the Tactical cube for example, it was only capable of surviving long enough to create a distraction for the away team (by that point the ship already had the benefits of various upgrades and 29th century drone who upgraded the tactical systems, and of course 7's assistance), and even when it fought together with a liberated Sphere against the Tactical Cube, they never won. Sure, they both managed to compromise shields in a single section of the Cube, but ultimately it was the Queen who destroyed it as she wanted Janeway dead.
In 'child's play' they managed to beam a torpedo inside a sphere which incurred moderate damage... never destroyed the SPhere... but it did disable it long enough for the ship to escape.
That showed some decent thinking on behalf of the crew in dealing with the Borg... and as we saw, the strategies they used had to change all the time.
The only exception to this was Endgame for obvious reasons - temporal changes and far more advanced technology which gets a free pass for the most part (and possibly the ending of Dark Frontier when Janway faced off with the Queen to retrieve 7 and finally when the Delta Flyer was being attacked inside the TW conduit on route back to VOY - which made the shuttle too OP to withstand all that barrage - although, it DID have the benefit of Borg shielding and again, 7 was helping)... here VOY ultimately managed to destroy the sphere, but only because they collapsed the conduit and the sheer force of that managed to obliterate the Sphere as they were going at extreme velocities - so THAT particular case works... its the Delta Flyer bit and Janeway facing off the Queen which are much weaker).
Dark Frontier would be the only outlier which gave the crew of VOY an 'unfair' edge over the Borg... but on the whole, the crew never really beat the Borg.
Why do people blame VOY for 'defanging' the Borg or have highly selective memory thinking the crew had 'outstanding' wins over them when they didn't?
Didn't FC movie do that by introducing the concept of a Queen into the Collective?
I'm not saying VOY doesn't have its low points, but to me, it was certainly more appealing than DS9.
And like it or not, the VOY crew distinguished itself in Trek history.
Also Disco had the USS Nog in the 32nd century.
So, in this regard, I don't think DS9 was neglected. I think it was represented in just the right amounts... and as we saw from Lower Decks, more is yet to come.