Suleiman the Magnificent Discussion

Backed after one year to finish this game. As my testing with his skill, Basil II HL - Mission 5, Conquest of Bulgaria, Stage 2 - Using Suleiman lead the Cav stacks to attack the nearest castle, morale loss of enemy counted on the first attack only, no charge or detour triggered.
The skill doubles the morale loss of surrounding enemies when being attacked.
Result of the morale loss caused by his first attack, is like this:
1. Without Helepolis Canon, without skill activated: -7
2. With Helepolis Canon lvl2, without skill activated: -17
3. With Helepolis Canon lvl3, with skill activated: -34
4. Without Helepolis Canon, with Suleiman's skill activated, and with Stephan the great stand right next to the castle with his skill activated also: -21
*CONCLUSION:
1. Helepolis canon lvl2 reduce enemy morale by 10 with each attack, add up; and Helepolis canon lvl3 reduce 20.
2. The skill of Suleiman doubles enemy's morale loss when damaged (not double the morale loss caused by wargear); and the effect can stack with Stephan's activate skill (200% morale loss by damage if Suleiman only, 300% morale loss with Suleiman and Stephan together)

Maybe, with this pair, leading Camel and Elephant group, we can decrease the morale of any to zero, in one turn.