Just looking at the numbers for a chapter 19 orc nest and a maxed out armory.
2x armory= 5x10 space
5x orc nest = 4x10 space
orc production orc nest = 1600 in 24h, so 5x1600=8000 orcs every 24h
orc production in armory = 2700 in 12h so 2x2700x2=10800 in 24h
so I get 2800 orcs more every 24h
but you would be right if you say: "the orc nest would be the NEXT best choice in orc production for players that don't want to fight."
In chapter 8 (Orcs)
Max level Armory (23) 5x5 360 orc/12h => 1.20 orcs / (h · square)
Max level Armory (23) 5x5 520 orc/24h => 0.86 orcs / (h · square)
Orc Nest (Orc) 4x2 400 orcs / 24h =>
2.08 orcs / (h · square)
+73% than armories (producing 12h)
without taking into account population, culture or tools...
EDIT: If I messed some number, please, just let me know to amend it. Thanks
EDIT2:
In chapter 19 (Exile)
Max level Armory (41) 5x5 2700 orc/12h =>
9.00 orcs / (h · square)
Max level Armory (41) 5x5 4000 orc/24h => 6.66 orcs / (h · square)
Orc Nest (Exile) 4x2 1600 orcs / 24h => 8.33 orcs / (h · square)
-7% than armories (producing 12h)
without taking into account population, culture or tools...
In chapter 18 (TeamSpirit)
Max level Armory (40) 5x5 2100 orc/12h =>
7.00 orcs / (h · square)
Max level Armory (40) 5x5 3100 orc/24h => 5.16 orcs / (h · square)
Orc Nest (TeamSpirit) 4x2 1280 orcs / 24h => 6.66 orcs / (h · square)
-4.8% than armories (producing 12h)
without taking into account population, culture or tools...
In chapter 17 (Unur)
Max level Armory (39) 4x7 1880 orc/12h => 5.59 orcs / (h · square)
Max level Armory (39) 4x7 2800 orc/24h => 4.16 orcs / (h · square)
Orc Nest (Unur) 4x2 1080 orcs / 24h =>
5.62 orcs / (h · square)
+0.5% than armories (producing 12h)
without taking into account population, culture or tools...