I've been playing this game since 2019 and this is one of the most painful stock tanks I've ever had the misfortune of playing
Mobility: The last thing I usually care about in my tanks. It's bearable when driving in a straight line. I play German heavies anyway. But when rotating the hull, this thing is slower than Nintendo's netcode.
Firepower: The 2nd thing I look for in a tank. Gun handling when rotating the turret is good enough, as is usually the case with Russian heavies. 390 alpha is nice, but good luck actually dealing that damage when your gun makes a storm trooper look like Chris Kyle, and the penetration (which is already considered to be lackluster at tier 7 where it belongs) is barely enough for tier 8's, god forbid you have to fire at a tier 9 or 10. Especially if you're unfortunate enough to land on Malinovka.
Armor: The 1st thing I look for in my tanks. Hull armor isn't bad. If you take the right angle you can shoot without exposing your front, but that's about where the positives end. You can effectively tank with your sides, but only if the enemies you're fighting are fucking lobotomy patients, because the turret of this thing gets is so thin I can almost see through it. This shit is about as reliable as a plastic bag for a parachute.
Source: https://www.reddit.com/r/WorldofTanks/comments/u3yapm/stock_ism/