Is black plate worth it?

[BesucherXia]

I will say the best comparation between ressource and gold can be made if we watch order and productivity dominion:

order 3: income+21%
vs
productivity 3: income+6% resource+45%

a chainmail unit costs resource about 20 while blackplate usually about 30,henceforce, this extra 45% res is just a "must" to make up for blackplate's disadvantage.

so for me, I will not choose 40 black plate infantry, but 40 chainmail men and take that 60 extra gold for 2 more scouts. Or how about 40 chainmail units+PD11(cost 66 gold) vs 40 Blackplate ones?

even for ma ulm itself, my conclusion is using chain mail and order 3, forget black plate and productivity 3. If you have much too gold becauseof the limitation from res, just save it for another castle or mercenaries.