I think what JB88 is referring to is the a=fact that at some angles, buildings appear to disappear. That makes confiriming the town down nearly impossible.
I fly over a town and kept seeing a building blink out. I asked for confirmation of buildings status and others saw the blinking building. So I said fugg it, dropped 2 50kgs on where i thought the building was, and got town building destroyed message.
Not sure if this is an isolated case, but perhaps something to look into.