If yes, then why remove your neg and if u made a mistake in judgement then he is correct in not trusting you.
I'm fairly sure it's seen as retaliatory to leave counter feedback, and as was discussed just a few days ago, leaving negative trust feedback for a neutral (was it neutral by the OP??) comment is "too harsh".
I totally get ur point; but don't think either of them is DT, also maybe the counter feedback is justified on parameters which the person doesn't trust OP and not just blind retaliation.