[Marcello]

"Also it would be desirable to pay your attention to very low parameters stabilizer on tanks T-72 - though in any documentation to these tanks - it is written that the gun at them is stabilized in two planes."

If you look at the game stabilizer ratings are in a 1-5 range, with 1 apparently standing for a bare bone single axis unit, 2 standing for a bare bone two axis unit and 5 for an high end western unit. Now, I do not know the exact technical parameters of the T-72 stabilizer but as far as I can tell considered the range 3 is a fair value.

As for the T-64 vs the T-80 I would not be so sure. Both were premium tanks and were produced in parallel for a period. I would not rule out that a late version of the
T-64 might have got a better stabilizer than an early version of the T-80. Not very rational maybe but neither was the decision of producing several types of mechanically incompatible tanks whose performances differences were mainly due to components that could have easily fitted to each of them anyway.