From the whitepaper:
When you reply to someone else, they get 50% of any payout you receive in that thread. This rule applies up to 6 levels deep.
Here's how I see it. Imagine that I got $100 worth of upvotes and that you and bendjmiller222 made $0 from direct upvotes. Then, from what I understand, I'd get paid $53.33, you'd get $26.66 from your comment here, bendjmiller222 would make $13.33 and you'd make $6.66 for your OP.
outdated. I asked ned the other day, comments keep the full reward