How is this WR even possible?

Jaguarz: A south American friend was grinding out a german medium crew a couple of days ago and I was platooning with him, came across a OTTER platoon in the PZ V/IV, kinda odd to see them a) at these tiers and b) on the SA server but I guess we dont see them much these days anyway but I digress, both of them had 1000s of games in the PZ V/IV and it was the most played tank on both accounts. To each their own I guess, the person the OP is referencing seems like a better than average player across the board but just wants to be king of a small bot filled pond.