This comment makes no sense. Only one factory was building T-14s meaning they were the same standard.
The T-14 Armata tank’s serial production was managed by Uralvagonzavod (UVZ) , specifically its Ural Design Bureau of Transport Machine-Building in Nizhny Tagil, Russia, but a dedicated assembly line struggled to materialize due to sanctions and funding issues
The crew capsule is 1000mm RHA UFP. I believe 800RHa LFP, and 600RHA on the sides, granted some of that is counted via era.
The round was totally resigned with the turret to accept much longer projectiles. Vacuum1 is the round it uses, which supposedly is rated for 1000mm RHA penetration. (Not sure how exact that is).
They resdesigned the transmission to allow quicker reverse, but not lack on mobility.
Honestly, I can’t wait to see the leap forward in tech more.