As said before Damage is only useful in head to head battles. In fact, one round me and my allies went only damage and armor (for the fun of it) and it worked out rather well until one of our armies got hit seperate from the pack.
If you have nonstop activity damage is plausible, but only if your opponent has the stones to go head to head with you, a rare quality in BD today.
Plus you lose too much armor conquering small alliances.
I think this dead horse has been beaten enough dont you