I would disagree with this. What if you had obliterated an force enemy force in the field, then followed them back for a final strike on their capital? The defenders could be massively outnumbered, but it's still an "important" battle for both sides. The defenders are defending their capital, while the attackers are assaulting their enemy's capital (perhaps for the first time ever, perhaps for the last - either way, still important).
The fact that the battle is in a city, and a capital at that, would practically guarantee it was an Important Battle for both sides. Yes, if the battle had occurred in a rural
next to the capital, then it would not be an Important Battle. But too bad. Just because you're fighting a hopeless fight against overwhelming odds, that you stand absolutely no chance at all of winning, doesn't mean that it's all that important. It's more of a formality than anything else.
And yes, it is possible for any automated system to make the wrong call. Edge cases and strategic situations will contribute to this. However, not being able to come up with a perfect system that makes the right call all the time doesn't mean that we can't make a good system that adds to the game, even if it makes the wrong call from time to time.
