Seriously ,How Advance Final Attack works?

I from Maplesea ..May I ask your questions about AFA of hero? I really very confuse about it , many forum just giving different answers or just useless answer about no animation time or blah blah blah,so I cant find out the true mechanicsm of it ,I don’t really know how final attack works . Hope I can get the answer here

If i using Brave slash now , and triggered AFA then my damage is
1) (300%x3 )+ 250% +250% or
2) (300%x3 )+(300%x2.5) +(300%x2.5) or
3) (300%x3) + (300% +250%) +(300%+250%)

and what skills does AFA will triggered? Is Panic and Coma works with AFA?
If AFA if follow equation 2) or 3) which based on your last attack damage , if the my last damage that used to triggered AFA is a critical damage , will it calculated based on the critical damage or a purely new damage? And AFAwill triggered a critical damage?

If I'm using Brave Slash which attack count were 4mobs ,then how AFA works? Once triggered AFA , it will affected
1)1mob
2)4mobs in the same time
3)4mobs having 60% rate to triggered AFA respectively ?

for your first question its the first one. it does 250% twice. And coma and panic trigger AFA its just that AFA no longer counts as a hit to charge orbs. and AFA can be a critical.
And AFA attacks only 1 mob unless ur using slash blast.