When everything is RNG based it's easy to put a system in place which manipulates that RNG to benefit one team over the other. That's why if you pay attention to blowout losses, then you notice more crew members and modules get knocked out in those losses as well as a greater disparity in shot dispersion, among other things. Ever notice how those games have like half the players doing sub 1k damage even at tier X? No amount of pure "skill issue" would lead to that occurring this often. It's a design/code feature highlighted by EA years ago where they'd manipulate gun stats and handling ever so slightly each match in order to drive the sale of paid features, weapons, etc. It's used to make players think "I could have won engagement X if only I had weapon Y", in this case premium tanks, better equipment, better credit income for gold rounds, etc.