User blog comment:Willbachbakal/(Champion Rework) Graves, the Outlaw/@comment-8050014-20150212075759/@comment-1330314-20150213035512

The damage overlaps based on Runaan's secondary bolts, so it's closer to, not counting crits. I guess that would be enough to justify having the above E passive apply multiple times, though I still think it feels weird to have an effect specifically tuned for multi-target damage contribute to single-target DPS.