The P&N example you gave doesn't help the AI at all.
All it actually does is add a description point to the component.
I used that to add the description "Protects against armor-skipping weapons".
I've also used that ability elsewhere to add the description "+ X% to accuracy" for weapons such as WMG which get an inherent bonus that is not normally visible except in combat.
It is very useful to know that your "Anti-Matter Torpedo I" has a +15% accuracy bonus in P&N, instead of having to simulate combat or read the components.txt file
