I am sure those figures are correct, but there was a dramatic difference between AA at Coral Sea and AA at Leyte Gulf. At the beginning of the war, and especially in the Atlantic and Med, fleetwide AA was spotty at best. I agree with your general point,but just sayin.
Absolutely Chaplain!
And I think the difference was the so-called radar proximity fuse (AKA VT) that The Allies didn't dare use in Europe for fear of it being duplicated and used to put an abrupt end to the bomber campaign over Germany. *
I think it's important that their is a fleet wide AA mechanic but it's at least equally important that it's done correctly. It would be far too easy to make it over-powered by adding it all up like HoI III does against Port Strike.
For example, if you've got your CV surrounded by, say, four CLs & 8 DDs to keep the example simple. The escorts would be in "shells" like electrons orbiting a nucleus. And they'd be quite spread-out too. And I mean miles apart as a Kate will cover four miles in a minute it's essential in order to bring down the attackers before they get in to firing range. It's easy to see from this that a torpedo bomber only has to fly near (everything is relative) to, perhaps, two DDs & one CL to get in to an attack position on the CV. That represents only a
quarter of the available AA in addition to the CV herself. Clearly, there's a law of diminishing returns as a third outer "shell" would require twice as many ships (16) and only one or two would be able to engage an incoming attacker.
Now dive bombers have a much easier time of it. Coming (almost) straight down, the (outer "shell") DDs don't get to fire until they're on their way out, leaving only one (inner "shell") CL that
might be able to fire in addition to the target.
Please remember that whilst it may well be that a third of the planes to come within range of US fleet AA may have been destroyed,
the vast majority of the 80 required for a hit were brought down by defending fighters NOT AAA!
EDIT * I've seen quotes that the VT made AA between 20 &
50 times (WTF?) more effective!