Army Statistic Analysis - WEI

Summary
Units                   Cost   Att Eff   Def Eff   Att Sus  Def Sus
Swordsman          440     0.09       0.19         40           85
Heavy Infantry      460     0.07       0.22         30           100
Guardsman           600     0.12       0.09         70           55
Light Calvary        1310   0.09       0.09         40           38.3
Qing Calvary        2170   0.08       0.09         45           46.3
Longbow Archer  880     0.11       0.23*       50           100*
Calvary Archer     1600   0.09       0.07        50           35

* Assuming bowman in tower with no blindage, refer to details below for other scenario

Definition
Attack/Defence Efficiency (Att/Def Eff)
- This represent the attack/defence per resource. Higher number means more efficient or lower cost per attack/defence point.
- This number is important when the game is resource constrainted (non gold player or in early of the game)
Example: 
In order to get 1 million attack/defence point (in the case you trying to occupy/defend a county)
Att/Def Eff = 0.20
- You need spent 5 million resources in total
Att/Def Eff = 0.10
- You need spent 10 million resources in total

Attack/Defence Sustainability (Att/Def Sus)
- This represent the attack/defence per your food supply. Higher number mean better susatinability in terms of food supply, or simply lower maintenance cost. Remember after building your troops you need to maintain them by supplying food, if you ran out of food your troops will run away.
- This number is important when the game is food constrained. Imagine your sub city with a max of lvl 10 farms, in a standard 6 farms sub city you only can have 6 x 300 = 1800 food/h. You may improved it by getting a +50% food oasis, gavernor bonus, hero bonus, getting a 15 farms city but eventually you are food constrained to a number. In long run this may be the number that is more important.
Example:
In order to get 1 million attack/defense point (in the case you trying to attack/defend a county)
Att Sus = 100
- You need to have 10,000/h food supply to maintain your troops
Att Sus = 50
- You need to have 20,000/h food supply to maintain your troops
* If your food supply is negative means you cant maintain the troops and you need to constantly get food from other means like plundering, trading, doing quest, use resources pack or asking for support from league member. However if you fail to login for sometime, you may ran out of food and lost your troops.

Swordsman
Cost:
Wood 120 Stone 100 Iron 180 Food 40 Total 440
Stat:
Att 40 Inf Def 35 Cal Def 50 Plunder 40 Speed 6 Food 1
Attack efficiency:
40/440 = 0.09 attack/resource
Defence efficientcy:
85/440 = 0.19 defense/resource
Plunder efficientcy:
40/440 = 0.09
Sustainability - Attack:
40/1 = 40 Attack per food
Sustainability - Defense:
85/1 = 85 Defense per food

Heavy Infantry
Cost:
Wood 100 Stone 130 Iron 160 Food 70 Total 460
Stat:
Att 30 Inf Def 65 Cal Def 35 Plunder 20 Speed 5 Food 1
Attack efficiency:
30/460 = 0.07 attack/resource
Defence efficientcy:
100/460 = 0.22 defense/resource
Plunder efficientcy:
20/460 = 0.04
Sustainability - Attack:
30/1 = 30 Attack per food
Sustainability - Defense:
100/1 = 100 Defense per food

Guardsman
Cost:
Wood 150 Stone 160 Iron 210 Food 80 Total 600
Stat:
Att 70 Inf Def 30 Cal Def 25 Plunder 50 Speed 7 Food 1
Attack efficiency:
70/600 = 0.12 attack/resource
Defence efficientcy:
55/600 = 0.09 defense/resource
Plunder efficientcy:
50/600 = 0.08
Sustainability - Attack:
70/1 = 70 Attack per food
Sustainability - Defense:
55/1 = 55 Defense per food

Light Calvary
Cost:
Wood 550 Stone 440 Iron 220 Food 100 Total 1310
Stat:
Att 120 Inf Def 65 Cal Def 50 Plunder 100 Speed 14 Food 3
Attack efficiency:
120/1310 = 0.09 attack/resource
Defence efficientcy:
115/1310 = 0.09 defense/resource
Plunder efficientcy:
100/1310 = 0.08
Sustainability - Attack:
120/3 = 40 Attack per food
Sustainability - Defense:
115/3 = 38.3 Defense per food

Qing Calvary
Cost:
Wood 550 Stone 640 Iron 800 Food 180 Total 2170
Stat:
Att 180 Inf Def 80 Cal Def 105 Plunder 70 Speed 10 Food 4
Attack efficiency:
180/2170 = 0.08 attack/resource
Defence efficientcy:
185/2170= 0.09 defense/resource
Plunder efficientcy:
70/2170 = 0.03
Sustainability - Attack:
180/4 = 45 Attack per food
Sustainability - Defense:
185/4 = 46.3 Defense per food

Longbow Archer
Cost:
Wood 420 Stone 180 Iron 200 Food 80 Total 880
Stat:
Att 100 Inf Def 10 Cal Def 5 Plunder 40 Speed 6 Food 2
Attack efficiency:
100/880 = 0.11 attack/resource
Defence efficientcy:
15/880 = 0.02 defense/resource
200/880 = 0.23 defense/resource **In tower
300/1480 = 0.20 defense/resource **In tower with blindage
(each blindage cost 600 resources)
Plunder efficientcy:
40/880 = 0.05
Sustainability - Attack:
100/2 = 50 Attack per food
Sustainability - Defense:
15/2 = 7.5 Defense per food
200/2 = 100 Defense per food **In tower
300/2 = 150 Defense per food **In tower with blindage

Calvary Archer
Cost:
Wood 800 Stone 380 Iron 300 Food 120 Total 1600
Stat:
Att 150 Inf Def 80 Cal Def 25 Plunder 70 Speed 14 Food 3
Attack efficiency:
150/1600 = 0.09 attack/resources
Defence efficientcy:
105/1600 = 0.07 defense/resource
Plunder efficientcy:
70/1600 = 0.04
Sustainability - Attack:
150/3 = 50 Attack per food
Sustainability - Defense:
105/3 = 35 Defense per food