Strategic bombers are simply terrible in vanilla, and i dont know what youre doing differently, but in my test scenario of 200 1940 German fighters with 5 agility vs 1000 1944 Strat Bombers, the bombers are all disrupted most of the time. Sure, you can damage a few buildings here and there, but lvl 5 AA Zones arent too expensive and counter the bombers very hard.
This is simply not true.
But let's address something first. Telling someone that putting 200 light fighters everywhere will disrupt bombers is not the same thing as telling them that 200 light fighters
backed up by maximum AA will disrupt bombers. Those are two very different things.
Having said that, I spent a few hours this afternoon testing light fighters against equal model year strategic bombers. I tested with no doctrines, full doctrines, no XP on planes, 475 XP on planes, and with/without AA.
In all tests, it was 1000 strategic bombers versus either no fighters (to establish a base line) or 200 light fighters. No design companies or ministers on either side. I also ran the test multiple times, as bomb damage is highly variable between days.
For testing purposes, I used France and Germany in 1936, using the console to cheat a war, and using IC to build up level 3 RADAR. The French were bombing western Germany. The Germans were defending. Both sides had plenty of RADAR coverage when running tests that involved light fighters hitting bombers.
All tests were run for 30 days, with 24 hour bombing and no retreat. Both Germany and France had 10,000 planes in stockpile to cover losses.
The results:
With no interceptors and no doctrines on either side, and with no AA, 1000 STR (again, 1940 model, no XP) did this to western Germany:
This was an average run. I had one test where they damaged almost 70 buildings. Again, damage results against enemy buildings are highly variable thanks to random targeting.
When 200 light fighters (1940 model, no xp, no doctrine) tried to counter them, this happened:
69.9 buildings damaged. Note what I said earlier: damage against buildings is highly variable, so this test ironically matches
one of my better bombing runs with no air opposition at all!
Look at the planes lost: Germany lost 52 planes and France lost 14 planes. (Let's ignore planes lost to accidents right now).
Calculating that out, each 1940 light fighter costs 26 production cost. Each strategic bomber (again, both at 1940 levels), costs 62. Germany lost 1352 production cost to France's 868 production.
So, not only did the 200 light fighters do very little to stop buildings from being damaged,
they lost in air to air combat to strategic bombers. At this rate of loss, the Luftwaffe will be dead just from fighting bombers.
This is why I say ignore the disruption number. It is full of sweet little lies. Look at buildings damaged if you care about what bombers are doing to air fields and ports and factories.
The above test really just gives us a baseline. Let's add full doctrines and AA guns.
Ouch! Giving Western Germany full AA guns in every state resulted in 87 bombers shot down. But note the buildings damaged: 30.1. AA guns are doing damage to incoming bombers, but they aren't stopping them completely. In fact, we should all remember that AA guns can be bombed, so over a long enough time line, the defending AA guns will be reduced in effectiveness.
What about adding fighters into the mix? Same fighters and bombers as before, but now both sides have full doctrines (battlefield destruction for Germany and strategic destruction for France, daylight bombing side).
Huh, strategic bombers did more damage this time through and lost fewer bombers. Again, high variability among damaged buildings is causing this. But look at those bombers lost numbers. 200 light fighters shot down 8 bombers while losing 58 of their own.
Umm, Goering needs to be removed for this level of incompetence. Not only did putting 200 fighters there to stop bombers have no significant impact on buildings damaged (the AA guns have
far more impact), but the losses the Luftwaffe is taking are simply unsustainable in the long run.
Part of this is related to how doctrines work. Folks often forget there are some nice ones buried in the strategic destruction tree. The one that increases bomber defense is crucial.
But these tests compared base model planes against one another. What if we applied 475 XP to the planes like so:
Will the 1940 Light Fighters make a difference now? (Note: adding speed to the 1940 strategic bomber is a waste in this particular test; the light fighter has it outclassed so badly, that adding speed won't help it very much.)
No fighters in the skies, max doctrines, max AA:
And with 200 fighters:
At this point, the 200 light fighters are finally making a
small difference. But again, 200 light fighters
even backed by maximum AA in all states in the air region has not stopped the bombing campaign. Those 23 damaged buildings could have been air fields.
Let's also consider the following: each static AA gun costs 2500 CIC to build. I built 35 to max out just one air region (in this case, western Germany). That's 87,500 cost in terms of CIC.
What else could Germany have spent that CIC on?
6.7 synthetic planes (13,000 production cost per plant).
12.15 MIC (7200 production cost a piece)
8.1 CIC (10,800 cost a piece)
25.9 RADAR (3375 cost a piece)
This isn't to say that AA guns are useless, but anyone who thinks they are basically free is misleading themselves. There is an opportunity cost. And AA guns at the state level are basically useless for anything else. The good news is that they are helpful against enemy strategic bombing. The bad news is that even at 5 per state, you are not immunized against enemy bombing.
I could redo these tests with 1944 models (we restrict research in my MP group, so I don't think it's worth my time), but the results aren't going to change that much. I've tried a dozen other combinations, and it always ends up the same: you need well over 50% of the bomber force in fighters to actually disrupt it enough to matter
and not lose tons of planes. Heavy Fighters are better at killing bombers than light fighters, but with 1:1 ratio of light fighters versus strategic bombers, the light fighters pay for themselves in dead bombers and disrupt enough to matter.