Sorry but this thread sounds to me like guys who can't dogfight ask for AA buff...
Completely simulate the randomness of AA position like IRL wouldn't work unless you can fly a few thousand meters and have the same visibility like IRL.
Totalize has 5 88 guns in a relatively small area, some small calibre AAs as well. Any team captures most of them can sufficiently annoy other team's pilots. It's not necessary to rant when getting killed in the 88. If you have problems shooting planes with AA, go grab a plane and knock it down, that's what I'll do.
That being said, we all know how US planes rape everything in Cobra. But that's more of a problem about the FW190 vs P51 dogfight. Planes in FH2 have a clear order of dogfight ability, something like:
P51>SpitIX>FW190>BF109F4>BF109E7>MC202>SpitV>P40>Hurricane
The better plane can make tighter turn which is almost everything in FH2 dogfight. I'm not a good fighter pilot but I always feel invincible when sitting in better plane. I can simply slow down to make tight turns and my opponent can't do much about it. In FH1 the allied planes can make tighter turns and German planes have higher climbing rate, which makes dogfight intersting, sadly that's not the case in FH2.