Let me cleaning up of the sequence of this case..
At first,NoKia(the victim)posted his golden M107(the stats have shown in the link posted by Code Solomon) on the trade channel and looking for RPK offer for the golden M107.
After a few second,Clemance(maybe we should call him a"scammer",instead of "cheater") have sent private message to NoKia,and willing to use the RPK(Dana's Decision)(A uni RPK with 42.% Ranger,It is a 3/3 one too.) for buying NoKia's golden M107). And NoKia accepted Clemence's trading request quickly.
And both NoKia and Clemence enter the trading room,and ready for exchange their stuff.But something was going wrong.NoKia have put his golden M107(Last Man's reaper.While Clemence put the RPK(Conquerer's lord)(which have a much weaker stat than the RPK(Dana's Decision). Soonly ,NoKia found that stat of the RPK which Clemence put on the trading slot was different to the original one and unaccept the trade, And quited the trading room.
However,Clemence still disturbing and insulting NoKia after his failure.(The part of insulting are also mentioned in the picture by Code Solomon.
This is the end of this accident.
P.S.I think Code Solomon should improving his presenting skill,as I cost few minute to realize how this accident happen.