Elderly

hi, i know that most of the evis damage comes from normal attacks crits. but i was wondering when it gets to artifacts, augments and agathions, do i stack p.att crit damage all the way or do i use some p.skill crit damage aswell. i am using DW fighters stg.1 lv.8 might and death and shillen 9 greed SA's. any advice/feedbacks would be greatly appreciated...thank you!