It is not really about details, it is about the overall narrative. The story they wanted to tell in DS9 was that it takes immoral tactics to win a war. I didn't like that. I would have preferred a story where it ultimately would have been the Federation commitment to their ideals which would have won the day. Showing that they were better than the Dominion, preferably by showing to the Jem'Hadar and even the Vorta that they didn't need to be slaves, that there was a better way.
Since this is all a matter of preference, there is really not much to discuss, I guess. You prefer the black and white moral code Roddenbury wanted. I quite enjoy the shades of gray in DS9.