Note I said firing pattern, not firepower

You can actually see massed turrets change pattern under certain circumstances, and weapon placement seems to effect that, to some degree or another. Like, sometimes they'll fire in a shotgun pattern, sometimes sequentially, sometimes together, but focused, sometimes completely off-the-wall random -- all of which seem to be able to vary, to a certain extent, based on where the weapons are placed. Like, you'll get a different spread for the shotgun moments if you're using spread out turrets vs. bunched up ones, stuff like that. Also seems to influence the AI to some degree on whether it chooses to swap firing patterns at all.
Is verra' minor, but it's there. Or at least seems to be.