Yes, you are right. But what is your point? At the end of the day, the seller will always get screwed if the customer complains because he shouldn't be selling fake goods in the first place.
Whether the buyer thinks its real or not doesn't matter, what matters is that as a seller, you are selling risky products. Customer can get his money back easy, customs can intercept (if international shipping), etc. And I'm 100% sure that for the 10% of customers that dispute and get their money back, the seller is still making thousands on the ones that are not disputing.