"good" RNG adds variety to the game without overpowers balance or skill. bad RNG overpowers skill and/or balance
Shooting AP rounds at infantry from a main cannon would only be effective at a direct hit and near miss scenario
which is represented by accuracy and aoe, not damage. the V in game is shown as having inert rounds as it has a tiny aoe (would could be made smaller) and shit accuracy against infantry.
Also tanks don't go anywhere without infantry support except in video games and movies.
or chechnya. and then they decide the tank sucks and stop building it.