If that´s really true, that´s bullshit. Even less T-34... and almost up to Panzer IVs performance wise? Russians should be about quantity, not quality. Mirror balance and RNG...
We've had that first in beta and then with soviet industry commander.
Both times it have proven to not work too well.
Overwhelming armor doctrine is what is left to prove not working.
And if you paid attention, you'd noticed that P4 is all about armor with great AT while T34 will be all about speed with great AI.
In my book it doesn't translate to mirror balance.