Level 9 Troops

The recent event (and it is not yet over, you can still buy the Persian boxes, but the devils do not drop them now) allow players to acquire Level 9 books for :

• Infantry 5 : Berserker / Sword Dancer / Duelist
• Infantry 6 : Slurbow / Longbowman / Sniper
• Cavalry 4 : Mounted Crossbowman / Horse Archer / Destroyer

But that leads to the question : How much better are Level 9 troops?

	Level 7 over Level 6	Level 8 over Level 7	Level 9 over Level 8
Sword Dancer	19.57%	16.70%	15.75%
Longbowman	19.29%	17.93%	16.78%
Horse Archer	18.40%	19.77%	16.11%
Duelist	20.30%	18.95%	15.31%
Sniper	17.97%	16.85%	15.74%
Destroyer	15.65%	16.87%	14.43%
Orcish Berserker	17.63%	16.59%	15.62%
Orcish Slurbow	19.10%	17.79%	16.68%
Mounted Crossbowman	17.87%	19.07%	16.28%

The laws of diminishing returns appear to apply. The shocker is that level 8 over level 7 for Cav 4 is actually more significant than level 7 over level 6.

16%-19% average is a lot. However, hero skills increases the troop by a fixed amount, independent of the troop level. Some scrolls also improve the troop by fixed amount (especially ATK and DEF). So, depending on your hero's skill and equipped scrolls, your mileage may vary.