[DRG]

Game "cost" has NOTHING to do with a units cost in RL. It is all determined by the cost calculator and every unit is "costed" using the same formula.

there are a host of factors that can change that, one being unit EXP and MOR but that is only one and having ATGM IS another

EDIT

If the 6 Invar-m are removed and 6 sabot put in their place the baseline cost of the T14 drops from 539 to 456 points which is still more than a 2A7V but by a much smaller amount so the ATGMs are the main reason for the difference---( and why Merkava 5 Barak's with 12 LAHAT are 743 points each)- but the Russian 125mm 2A82-1M gun also pushes the cost up a bit. That weapon is new base on recent info. That gun is only used by the Armata and it has a muzzle velocity reported to be on average 400 m/s (1300 f/s) faster than the rounds used by a T-90 for example. That's a huge jump in velocity and gives the gun a sabot pen of (allegedly) 1,000 mm at 0° at 2000m (allegedly) and therefore has a considerably higher sabot pen in the game

This does not make them invincible as testing has shown but if it hits you, it will usually hurt, but, that gun only adds 16 points to the cost of an Armata with ATGM so the 6 Invars are the main reason for the cost difference

We really won't know how effective the new gun will actually be for probably a decade.....if then, unless there is a tank battle soon that proves something one way or the other. The added velocity is not going to increase barrel life though.