I am at T7 for all 3 nations and am 1/2 way - 3/4 of the way to the T8's. Have played against the T8/T9's. Have not played against any of the T10's. Based on that, for me, and excluding any Premium BB's...
It is actually sort of close between KM and USN for the #1 spot. KM line is faster and has better armor but the USN line has superior guns. The KM lines wins out though because basically their armor, faster ship AND gun reload speed, will usually give you the edge and help cover any mistakes you might make. USN guns though are WAY better. KM line has better secondary's and USN line has better AA so I call that a wash. IJN line IMO is inferior to both by a long shot( through what I have played and played against - does not include Yamato ). Very weak armor for BB's and super inconsistent AP damage. I don't see the superior accuracy with them their stats and other people commenting about suggest they have either. Example, I have seen people talk about Nagato having laser guns and how it pummels what it hits. That has not been the case for me. Accuracy/dispersion has been almost as bad as Gneiseanu for me and when I do hit the damage is very inconsistent. Colorado is far more accurate and deals far more damage for me.
So for me it is as shown above through playing up to T7 and against up to T9. Individual tiers I would say...
- South Carolina
- Myogi ( worst BB in game! )
- Konig ( one of best BB's in game )
- New York
- New Mexico
- Colorado ( it's slow and squishy but good lord those guns and the AA is awesome too. one of my favorite BB's overall )
The following is based solely on playing against the ships as I have not played them myself yet...
Bismarck ( no brainer here )
Friedrich der Große
Izumo ( have not played against but from what I see in stats and in replays not impressed ).