I think there was a report a long time ago, just after they randomly and incorrectly updated the mass. Claim based on initial mass of vehicle in-game, earlier A.45 (55t) and estimates based on real life info.
Centurion Mk 3 turret weighs 12.7t (REME and model forum)
FV200 GT testbed weighed 45.7t. The testbed was a base hull - meteorite engine (835.1kg) + No2979 GT engine (2540kg) and a bunch of gubbins welded on for test gear
2540 - 835.1 = 1704.9kg
45.7t - 1.7t = 44t (43,995.1kg)
I don’t think Gaijin model Lambda Compensation directly, but the whole point of Lambda Compensation is to stop the missile pulling so hard that it inadvertently puts the target outside the gimbal limits. As far as I know missiles in game won’t carry out a maneuver which will result in it pointing more than it’s max look angle away from the target.
So in essence the outcome of Lambda Compensation is modelled
That’s just proportional navigation guidance. All Lambda Compensation really does is reduce steering commands at the start of flight to stop the missile pointing so far ahead that the target leaves the seeker gimbal limits.