A question I need help with

[Imp]

In game turns CIWS is marginaly more effective than VIRSS though the diffrence is not worth worrying about. I think there are only a couple of vehicles in the game when you can choose the type fitted namely Russian MBTs so buy the CIWS varient.

However & I am not sure here but I dont think all VIRSS & Guided Missiles are the same I have a feeling there are 2 most likely 3 ranks of them.
In other words missiles like ATGMs have 2 or 3 diffrent base chances of defeating the defence system. Keeping simple a modern ATGM would have more chance of making it through than an 1980s one vs the same target.
Like I say this is just a feeling I have.