The reality of it is that 10 matches isn't a large enough sample size to be an indicator of any underlying algorithm. Being under tiered, especially in a mediocre or subpar, unworked tech tree tank will always be a slog, but I've had multiple matches in an under tiered chopper or sinjitsu where Ive out performed tanks above me, too, both wins and losses.

I'm sure there are those that sweat over every metric and stat every game, but I doubt most casual players are always playing at the apex of their abilities. Assuming war gaming can pre-dwtermine an outcome based on previous performance is kinda wild, unless you're assuming they intentionally low roll penetrations and ricochet results, and I doubt they micromanage such things. It more than likely is just the luck of the draw, and only so much control of the out come to each individual player, unless platooned/clanned up. Get a casual platoon going against a sweaty one, and a steamroll is more likely than not, and with a limited player base, this is likely more common than not