It was never anywhere close to being the main focus, whereas in KoDP it very much is - and in order to make that happen, KoDP had a whole lot of elements that are typical for strategy game removed, starting from the fact that you can't control battles and, more importantly, do not conquer territory.
Debatable. You don't really exert much low-level control over the fighting, but you do sort of have a level of involvement in them: You pick the overall tactical goals, which may or may not have an effect, although I certainly got the impression I was causing more deaths with my KILL AS MANY AS POSSIBLE choices, and your use of artifacts, which most certainly DOES have an effect (Raven Banner, anyone?). As for whether or not you "conquer territory", while there are no explicit provinces or cities to take over, you certainly DO acquire land: This is not dissimilar to other statblock country wargames like that Renaissance one, on the Compydore 64, whose name eludes me.
When I first played KoDP back when it was new, my initial and immediate impression of it was that it was a strategy game systematically pruned down to highlight the story events as the key game element.
When I first played KODP, my initial and immediate impression of it before I had even started playing it was, "Oh, hey, one of these, I haven't played one of these in ages, let's try this.". It was so NOT unique, to my old, jaded perspective, that I picked up precisely because it was a comfortable and familiar "One of these".
Now I have no idea if that's how they came up with the concept, but the end result is a society-building game in which the story event mechanic is blown way out of proportion compared to anything that came before it, and it all works because there's barely anything else there. "Text description: now choose from these four options" is like the oldest game mechanic imaginable, but if anything that makes it even more impressive that KoDP did something unique and practically unprecedented with it.
Unique? Unprecedented? You and I have both cited numerous precedents. KODP is firmly derivative. It's pretty and they wrapped it up nicely, but it's nothing strange that I haven't encountered before. It's not like some games I've encountered, where I went, "Oi, mate, what's this? I've never seen this before.". KODP was familiar, every element something I had seen before in a similar game, as well as different game. To me, I got the impression that someone had taken elements from a number of games both similar and different and kitbashed them together to form this new game, which, of course, is what making games is all about.
None of this prevents it from being a neat game, but to call this truly original, novel, and unique? Pushing it. To me, it's a "like X, but with some of Y, and a bit of Z". Case in point: I would never describe any future game as "like KODP" as my first point of comparison, because KODP is not the archetype of any element I would compare.