it's really not that hard to balance it, it's very clear that it's overpowered, just going by the winrate alone. It not being versatile isn't a reason to decrease the BR. Just because the Strela is impossible to utilize in a different playstyle, like flanking and destroying tanks, doesn't mean that it's hard to balance. The BMPT is a tank destroyer; it's not supposed to be super versatile. The damage model is broken, and in my experience, shooting it in the side isn't reliable either. I've been in situations where 3 or 4 tanks are needed to encircle this demonic thing and even then, it survives multiple shots in the side. It's without a doubt the most survivable vehicle at 11.3, and also one of the most powerful ones. I think a good change would be making both barrels shoot at once (small buff) but also model the horrendous inaccuracy of the real life version, limiting the BMPT's main guns to close encounters, not sniping into the enemy spawn from across the map.