Quote Originally Posted by xxMidnightxx View Post
--So abilities in different frame tiers stack in debuff say attack/def down, but same tiers don’t and just misses?
Yes. A weaker B debuff (like Mordred's 10% Outrage) will just miss against a stronger B debuff (like Dartagnan's 20% Sniper Shot). Sniper Shot will overwrite Outrage, but this is currently bugged, so make sure to apply Sniper Shot first.
Quote Originally Posted by xxMidnightxx View Post
And are A frames the strongest?
No... well, SSR Amon has -25% which is currently outmatched. But -50% is the cap (for Def, no cap on Atk debuffs until valentine).
Quote Originally Posted by xxMidnightxx View Post
Last but not least, is there a way to tell which debuff is in which frame w/o knowing? Tysm!
One way is the encyclopedia in Sanahtlig's toolbox gives you a quick peek on all the skills, including upcoming ones.