Reference thread -> http://plarium.com/forum/en/stormfall-age-of-war/game-tutorials/35915_overall-unit-comparison-long-and-indepth-by-mehnslayer

Default stats / 40 = units power points (valuable for league quests; train units & kill units. As well as pvp based tournaments and experience)

Pike = 40 Offense / 40 = 1

Archer = 19 Defense / 40 = 0.475

Dwarf = 22 Defense / 40 = 0.55

Paladin = 60 Offense / 40 = 1.5

Arbalester = 30 Defense / 40 = 0.75

Bear rider = 30 Defense / 40 = 0.75

Warden = 60 Defense / 40 = 1.5

Ballista = 60 Defense / 40 = 1.5

Pathfinder = 75 Offense / 40 = 1.875

Huntress = 30 Defense / 40 = 0.75

Nomad = 150 Defense / 40 = 3.75

Knight = 240 Offense / 40 = 6

Barb = 150 Defense / 40 = 3.75

Great lord = 360 Offense / 40 = 9

Reaver = 360 Offense / 40 = 9

Golem = 400 Defense / 40 = 10

Warlock = 720 Offense / 40 = 18

Demon = 415 Defense / 40 = 10.375

Necro = 900 Offense / 40 = 22.5

Griffin = 587.5 Defense / 40 = 14.675

Wyvern = 1440 Offense / 40 = 36

Dragon = 1680 Offense / 40 = 42

Chimera = 900 Offense / 40 = 22.5

 

Additional section for train units - league quest.

Formula = Resources / PP = PP per resource

 

Pike = 40 Offense / 40 = 1 -> 300 / 1 = 300 resources per power point

Archer = 19 Defense / 40 = 0.475 -> 120 / 0.475 = 252.63 resources per power point

Dwarf = 22 Defense / 40 = 0.55 -> 192 / 0.55 = 349.09 resources per power point

Paladin = 60 Offense / 40 = 1.5 -> 520 / 1.5 = 346.66 resources per power point

Arbalester = 30 Defense / 40 = 0.75 -> 430 / 0.75 = 573.33 resources per power point

Bear rider = 30 Defense / 40 = 0.75 -> 430 / 0.75 = 573.33 resources per power point

Warden = 60 Defense / 40 = 1.5 -> 860 / 1.5 = 573.33 resources per power point

Ballista = 60 Defense / 40 = 1.5  -> 860 / 1.5 = 573.33 resources per power point

Pathfinder = 75 Offense / 40 = 1.875 -> 1300 / 1.875 = 693.33 resources per power point

Huntress = 30 Defense / 40 = 0.75  -> 520 / 0.75 = 693.33 resources per power point

Nomad = 150 Defense / 40 = 3.75 -> 1760 / 3.75 = 469.33 resources per power point

Knight = 240 Offense / 40 = 6 -> 2166 / 6 = 361 resources per power point

Barb = 150 Defense / 40 = 3.75 -> 1900 / 3.75 = 506.66 resources per power point

Great lord = 360 Offense / 40 = 9 -> 3520 / 9 = 391.11 resources per power point

Reaver = 360 Offense / 40 = 9 -> 5400 / 9 = 600 resources per power point

Golem = 400 Defense / 40 = 10 -> 5000 / 10 = 500 resources per power point

Warlock = 720 Offense / 40 = 18 -> 7823 / 18 = 434.61 resources per power point

Demon = 415 Defense / 40 = 10.375 -> 5300 / 10.375 = 510.84 resources per power point

Necro = 900 Offense / 40 = 22.5 -> 10610 / 22.5 = 471.55 resources per power point

Griffin = 587.5 Defense / 40 = 14.675 -> 7500 / 14.675 = 511.07 resources per power point

Wyvern = 1440 Offense / 40 = 36 -> 19000 / 36 = 527.77 resources per power point

Dragon = 1680 Offense / 40 = 42 -> 21077 / 42 = 501.83 resources per power point

Chimera = 900 Offense / 40 = 22.5 -> 18200 / 22.5 = 808.88 resources per power point

 

Edit, lower = better... So archer = top tier for power points.