I don't know how I have gone this long without noticing this, but IG86 is not actually giving bonus critical damage on a successful Droid Assist.
He is doing approximately 10500 on a crit with his Assist, which is exactly around the amount he should be doing with the top end being around 7000 dmg base and 65% critical damage due to his passive.
If this was actually working as intended he would be critting for around 16500
EDIT: I see now there's another post on this topic already, sorry!
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