hmm...

If I got it correct.. when defender armour is > 3, attacker get positive bonus from pierce-weapon.

Assuming, that the defender already has armour > 3, a +1 armour upgrade gives +1 def +1 arm, and overall to the attacker with pierce-weapon its net combat factor decrease only by 1/2 pt, instead of 1 pt compared to a non-pierce unit.

So the unit with armour-piercing weapon still gain, as oppose to your statement. The armour-piercing units get maximise in effectiveness if

1. attack against an enemy unit with high base armour rating.
2. when attacking against an enemy with armour upgrades, it only gives the enemy an improvement of 0.5 combat point as compare to 1 pt (provided net armour > 3).


Correct me if wrong.