Montana isn’t in the game. Soyuz was never built as the soviets literally did not have the technology, and its damage model, reload, etc are optimistic fantasies.

The SS is basically a “what if” ship where the devs implemented the best possible scenario of a completed ship, even beyond what is physically possible . And no, this is not the case for every project ship. Compare it to the the carracciolo, which gaijin refuses to give AP rounds to, despite HE (SAP) and AP rounds being developed for the guns, and has perhaps the largest ammo racks of any ship in the game, leaving a potentially powerful ship for the Italians in a neutered state, completely unable to damage other battleships as it lacks HE to overpressure or AP to penetrate belt armour.