'Weapon dampeners' has larger area of effect, and can be fire at opponent almost instantnly once player has large number of spanners. Spanners are also faster and small. One can often fly over units, fire its ability and come back fast to formation without even being spotted.
Archangel's 'sabotage weaponry' has smaller area of effect and unit itself require a lot more command points to recruit. So if player decides to build more archangels, 'sabotage weaponry' will be used rarly and against smaller number of units.
I admit that 'Sabotage Weaponry' is kind of mistery to me. I only suspect that this ability decreases damage of opponent's fire. If that is true it means both abilities has similar effect on the opponent: reduces effectivness of (at least)comabt units.
True is that Archangels can have more repair beams in total, have more abilities, and 'sabotage weaonry' comes automatically with it, but still 'weapon dampeners' seems to me more useful than 'sabotage weaponry', when each, spanners and archangels use all possible command points.
Is there something that I missed? Maybe each ability should be used against different kind of units. I dont know that.
Anyone has a clue?