A single Battleship of current date doesn’t show everything, likewise is we go by class or by through the ages than the best is everywhere in BR.
The soviets/ Imperial Russia may have powerful ships but other nations have just as many.
Capital ships by memory:
• Project 23 Sovetsky Soyuz currently
• Battleship Scharnhorst, kinda concurrent for the past few years (mechanics added just to deal with it)
• before Project 23, the Battleship Mutsu & Battlecuiser Amagi for the newest stuff
• before that Scharnhorst as mentioned
• before that the Project 69 Kronshtadt (although heavily nerfed now)
• Battleship Parizhskaya Kommuna with the 1928 HE shells
• Battleship Hyūga with a small forward weak spot, added to the game when no other nation had 14" armed ships *fun days as the US or GB back then).
• Light Cruiser USS Brooklyn / Hellena
• Light Cruiser Nürnberg
• Light Cruiser Köln
• the Original big bad, the cruiser Emden & the first set of ships to have 20k sl repairs (Emden, Köln, Nürnberg, Type 140 Jaguar, Type 143 Albatross all had 20k repairs)
Also for a current list of all ship types, the soviets I guess could’ve four maybe top ships yet many are overshadowed by at BR powerhouse ships of other nations.
Example while many shall point to the Project 35 SKR-7 as the best 4.3 frigate type, that would be incorrect for the game sense due to the extremely exposed magazines & the torturous ready racks (148 shells per cannon with a five second reload rate after) but is feared for the first stage fire rate & 6000 metre range rocket assisted depth charges.
Yet at 4.3 BR there’s the Ayanami class 1958 (technically a destroyer) yet rate a frigate the JDS Ayanami DD-103, the vessel has six older late WWII AA guns as main battery, carries slightly better torpedoes plus a reload, it’s much faster & can fire it cannons longer (if you don’t care about jamming), it has only one exposed magazine yet this can be mitigated by only taking 1800 shells along with a slightly longer range, resulting in the soviet frigate having to get closer before returning fire (you would be surprised at how ranges will effect duels & that the soviet small calibre ships struggle in this department as they’ve less range than other nations ships).
Above & below that soviet frigate in BR is the Köln class Frigates which sit at 4.7 now & were perfect counters to those ships with heavier 100 mm cannons without a ready rack an more powerful rockets & below is the British 4.0 lineup with the Restigouche class Destroyer (HMCS Terra Nova DDE-259) with a higher RoF 3" that never overheats & has a ready rack of 300 odd shells at 90rpm but even than the rack doesn’t need reloading & has a sustained fire of 75rpm, also there’s the powerful Type 41 AD Frigate (HMS Leopard F14) with four 4.5" cannons that rip those soviet ships apart (only drawback is ammunition cost for the frigate, the destroyer has free ammunition as the only shell is HE-VT ammunition).