To be fair, as the middle man (if he is) he is still responsible for anything he says or claims. By sending false QC pics, its technically a bait and switch scam. Both buyer (for filing a pp dispute) and seller are wrong in this instance in my opinion.
I can see why the buyer is soo angry though. If I payed those prices, I would expect the very highest grade replicas. The scarf in that picture is pathetic, honestly they sell higher quality replica scarfs at boot sales for £2.