Originally Posted by Wutan

Yes Damage Reduction is indeed A+B. There is a Video on Youtube showcasing such a Team. It's insane Looks like Southern Cross is one of the best 5* Events

Honestly i think i am hunting only B;A;S-Tier 6* right now cause that are the Girls with Damage Reduction and Skill Activation Rate (but it seems Skill Activation doesn't stack cause Nazrin doesn't see any significant difference right now and it's the same two Girls Drip wants to test)

But maybe all Girls from the Squad need to be Lvl 70 (Evolution) to get the Skill Activation Stack? i don't know...

I don't think getting the girl to level 70 would change the algorithm in anyway.
Beside, what is B;A;S-Tier 6*?