Hmm, could have sworn the ammo types in CSC were knocking points off per die rolled or some such. The more super the AP the more got through.MgT1 did something similar with the various AP ammo types. But MgT1 armor was direct damage-point armor reduction. So 5-point armor always absorbed 5 points of damage. T4 armor eliminates damage-dice instead of damage-points, so there was a little more abstraction to the results of a hit. For example, in MgT1 if you roll 18 points of damage (regardless of how it is rolled), 18 points of armor will absorb all of it. In T4 if you roll 18 points of damage, armor may absorb all of it depending on how the dice played out. For example, if you have 3-points of armor, 18 points of damage on 3D will be completely absorbed. However, 18 points on 4D vs. 3-point armor will NOT be completely absorbed. The armor-damage interaction is less certain.
I skip the whole thing by just upping penetration in CT Striker.