Hello Alexander,

thank you for making your thoughts more clear. But I think you have probably a wrong understanding of Acc'tan's lieutenant feature. The 20% DEF boost is

permanentuntil end off battlestackable

Stackable means that each activation adds to the previous ones. In case of Acc'tan a 20% bonus per activation means:

0 activations: DEF_{0}(regular DEF value)

1 activations: DEF_{1}= 1.2 x DEF_{0}

2 activations: DEF_{2}= 1.2 x DEF_{1}= 1.44 x DEF_{0}

3 activations: DEF_{3}= 1.2 x DEF_{2}= 1.73 x DEF_{0}

4 activations: DEF_{4}= 1.2 x DEF_{3}= 2.07 x DEF_{0}

5 activations: DEF_{5}= 1.2 x DEF_{4}= 2.49 x DEF_{0}

6 activations: DEF_{6}= 1.2 x DEF_{5}= 2.99 x DEF_{0}

In your video I counted 6 Acc'tan activations before Alfreds special is applied to Geoffrey. Therefore in your formulas

you should consider (ATK+50% + SATK+50%) - (DEF+199% + SDEF) following your notation.

The second thing is you wrote you expect Alfred's skill to behave like

The question for me is why do you have this expectation? The english translation of Alfred says:"Vertical attack; causes 120% S-ATK damage upon hitting the target; its own accumulator won't be increased when attacked. The target will also be afflicted with a curse lasts one round; when the curse ends, the target will suffer a 400% S-ATK damage from the player casting the curse."

The first part (causes 120% S-ATK damage) describes the regular special attack following the formula:

[(ATK + S-ATK) - (DEF + S-DEF)] × ACC × Spec Mod = Damage Dealt

with Spec Mod = 1.2 (from 120%) and ACC = 1.00 (from 100% no overcharge).

Taking the Paint Coats and Acc'tan into account:

[(1.5 x ATK + 1.5 x S-ATK) - (2.99 x DEF + S-DEF)] × 1.0 × 1.2 = Damage Dealt

I think even with level 2 Paint Coats 2.99-fold DEF of a [+7] Protector can compensate 1.5 x ATK + 1.5 x S-ATK of a comparable weak attacker like Alfred.

So what about the second part of the special description (when the curse ends, the target will suffer a 400% S-ATK damage)?

Maybe the wording is not perfect but from programming point of view it's obvious to implement the curse similar to poison damage that means store special attack damage internally and use the value when the curse has to be applied. So a "400% S-ATK damage" means the damage from last special attack x 4.0 (400%). Don't forget "S-ATK" is in commander description used as synonym for the special attack and theSpec Mod.

So why do you expect it your way of interpretation?