Get out your mood rings and pet rocks, because that seems to be how the AI ack is.
I had 3 interesting encounters today...
1) Low, fast LA7 flying between city and base at A7. One magical tracer ping shot my tail off and I did some impressive cartwheels before hitting the ground. Seems to give merit to the faster-more-accurate theory.
2) Again approaching A7, just cleared the ridgeline west of the base in a P47 D25. Not very fast, was scouting the area before ingressing. First tracer blew the right wing off, sending me to the ground.
3) Flew a Lancaster from A37 to A19, overflew a Rook CV at 17k. Black ack puffs everywhere, not a hint of damage.
So, it seems to me where the ack should have had me right on, it doesn't. Conversely, if its a way out/incredibly roadkill angle/range, it gets me every time. Not to mention ack flying thru buildings and such...at any rate, the ack needs to be checked out a tad.
All 3 examples were filmed.
My 2 cents