I heard from an astrophysicist (so you don't salute her) that the Mig 28 sims don't bleed energy below 400 knots like the real thing...and won't do a negative G pushover...
Not directly related...but this thread somehow reminded me of the famous "Ryan's Steak House Story", described here: https://shortyellowb.blogspot.com/2009/01/ryans-steakhouse-story_2860.html