The algorithm they use is inherently flawed because for whatever data they put in, it never considers the actual stats of the vehicles it’s balancing. This is what leads to those hilarious situations where identical vehicles are at wildly different BRs in different nations. Who else remembers the German M48 being 7.0 while the American one was 7.3. And then they wanted to move it down to 6.7. I remember.
If I had to guess, they do absolutely no stat normalization on whatever statistics they’re using. The most basic version is just to compare the winrate of a player to their winrate in a given vehicle. If you see a vehicle with a 40% winrate, that’s an issue. But, if you then look at the stats and notice it’s primarily being played by players with a 40% winrate, then it’s clear there’s no actual imbalance there. Same on the flipside, 60% winrate players achieving a 60% winrate in a vehicle indicates near perfect balance.
Additionally, Gaijin needs to do more to help teach players how to play the game. The current level of tutorialization in game is laughable. No wonder many new players struggle with how to use energy fighters, when the game never teachs them what they are, how they work, which are which and how to play them. When a new player unlocks a new vehicle, outside of googling for guides, how are they supposed to know what to do with them? The stats window is needless complex, offers severals stats not useful to anyone, doesn’t make any useful comparisons to other vehicles you’ll be fighting, and doesn’t even tell you what basic playstyle to use.
This way, we might see an actual solution to the longstanding problem of minor nations with overall better player ending up with hilariously overtiered vehicles, and major nations having the opposite problem.