I have made a CONSERVATIVE chart as to what I think Top Tier MBT BRs should be like to more fairly resemble balance. It is not perfect, so I would like to read your feedback!
Ideally, lower BRs would be decompressed too, leading to a Top BR of at least 14.7, but, for now, I believe this would be a step in the right direction.
Also added the BMPTs despite being an MBT chart because they are highly relevant vehicles in Top Tier, as pretty much the best Russian ground vehicles lol.
I also put emphasis on historical accuracy without making it detrimental to gameplay, which is mostly why I suggest removing DM53 from Italian and Swedish MBTs which never operated it and why M1A1 AIMs receive KE-W A2.
Since Gaijin refuses to give M1A2 SEPv3s their proper armor, I believe M829A4 would be in order as to make them actually stand out compared to all other SEPv2s and SEPs in at least one aspect and justify being at the new very top BR alongside the uparmored Leopard 2A7s. Given the extreme decompression I suggest, I believe it to be balanced. The Leclercs would remain at a lower BR with an even better shell (the best in the entire game) because of their weaker protection.
EDIT: I just realised I missed China's Oplot-M, ouch!