I like the fact that you made some test etc but in my opinion, to prove that anything is wrong with dagger dmg you need to use same conditions here as on gran kain (same lvl, same buffs , same items and class) and prove that dmg is different. For example you cant use bd instead of glad, because bd has different hvy armor mastery, and test when you have vicious stance and 74 lvl while guy on movie has 63 and no vicious stance, doesnt provide any usefull information, unless your dmg on 74 lvl would be same or lower. Try to make new test and copy conditions from gran kain and compare dmg.