You're confusing trust as social term and trust as forum indicator. I use the word "trust" as social term.
Forum indicators don't make any sense to me. What if some legendary user knows you for a long time and can personally vouch for you? What if someone gave you a point for a confirmed transaction? They both can give you +1 trust, but, of course, the amount of actual, social trust (the only trust that matters), they put into you is different. Forum indicators can't reflect it.
You're the one who confuse it.
If the legendary user give positive feedback just because a long term relationship or helping you to understand something, without any financial deal. They're technically using forum feedback inappropriate.
If I were someone that want to judge someone reputation, I will skip to read such kind of feedback and only pay attention to feedback about financial.