Stay leery of tactical simulations. I remember two four stars... one Army, one Air Force... committing to full integration of Army Air Defenders and Air Force assets at the National Training Center, Fort Irwin, back in the 1980's. The Air Force didn't accept the validity of the Army MILES (Multiple Integrated Laser Engagement System) simulation to determine engagement outcomes, and the Army didn't accept the validity of the Air Force computer-based simulation system.
After endless hours of "real" exercises, the Army folks concluded they knocked down most Air Force assets with few casualties of their own while the Air Force concluded they destroyed most Army assets while suffering few casualties of their own. The effort to integrate the assets at Ft Irwin slowed, stalled and died.
BOTTOM LINE: The accuracy of simulations will always be doubted by some of the players. Politics will always make simulations questionable at best.
Just another observation: When the Army Training Support Center at Ft Eustis tried to determine the "Probability of Kill" of a single shot of a Stinger against an Apache to program it into MILES back in the 1980's, Ft Bliss, then the Army Air Defense Center Center said 97%. Ft Rucker, the Aviation Center, said 7%. Army Material Command test and evaluation assets answered with truckloads of test data and no definitive answers.