Juhani the one hit wonder

The assist from Revan is at -50% damage, which is maybe not noticeable when he is leader because Jedi attacking out of turn gain 35% offense. Carth's leadership gives OR allies a chance to call another OR ally to assist when using their basic, also dealing -50% damage. We know from Dev answers to bug reports that these would stack for -100% damage. This is what's happening; Revan is calling Juhani to assist in these times. I think the 4 could be from rounding error. In your vid you can't see it, because the character dies, but I would watch to see if she attacks twice on the times she does the small damage.