Well…
I realised I forgot to add the 170 damage you get from Blessing skill levels itself…but that doesn’t make difference in the comparison.
Also I’m not a math genius and also I’m tired…so maybe I didn’t do it well…XD
Rank 8 / 366 SPR (279 points on it + bonus) / lvl 15 Blessing / 6 basic INT
0.06 * 366 * 14 + 0.02 * 6 * 14 = 309 Blessing damage added to every hit
286(basic matk with basic INT) * 2(maxed attribute)+366(SPR) * 2(maxed attribute)= 1304 Aspergillum damage (without Aspersion skill level damage)
1613 with Blessing
5 AA hits with Blessing: 309*4+1613=2849
Carnivory lvl 1: [(286(matk)+645(skilldamage)) * 2(maxed attribute)+309(Bless)] * 22(hits) = 47762 damage
Rank8 / 8 basic SPR / lvl 15 Blessing / 615 INT (279 points on it + bonus)
0.06 * 8 * 14 + 0.02 * 615 * 14 = 178 Blessing damage
890(matk) * 2(maxed attribute)+8( basic SPR) * 2(maxed attribute)= 1796 Aspergillum damage (without Aspersion skill level damage)
1974 with Blessing
5 AA hits with Blessing: 178 * 4+1974=2686
Carnivory lvl1: [(890(matk)+645(skilldamage)) * 2(maxed attribute)+178(Bless)] * 22(hits) = 71456 damage
Other things:
I chose Carnivory as example because it is more simple… Zaibas and Cure scales with INT too…
It is calculated to level 280. There will be more levels that means much more bonus to INT (more than SPR because of the Rank bonus) So the gap will grow between them.
It is calculated to Rank 8 but maybe there will be more… and that only affects INT.
Another factor is that INT Priests can get Blessing from an SPR Priest and that means even more insane damage for them… while even when they can’t get it their Blessing is still fine.
Anyway my conclusion is that you can argue about it which one is better… but INT will still make more damage than SPR when you use magic skills too.
If you want a full AA build then definitely SPR is the way to go.