Jed, for past few years I've stated this more then once - REALISTIC ack would only make the ack 10x stronger in game.
Someone questioned me and I showed them the stats for a carrier battle group - for example CLAA's, battleships, Cruiser, Destroyers.
Put it this way - what we have in game is nothing near realistic, its for balancing (Game wise) - if it was realism - you'd have HUNDREDS of flak bursts around you, not 8-10 machine guns shooting at you, but Dozens and dozens.
Here's a photo just to give you an idea:

