You're comparing apples to oranges. There was no "exploit" involved in the Razer incident. It was a discount that was left in the system by accident that was later discovered and abused by a number of people. Whereas with Blizzard some players discovered an unintended FLAW in the system and decided to exploit that flaw.And thats why I'm saying the players should not be penalized.
I remember Razer standing behind a 90% discount, that was not intentionally issued. They did so because it was considered, the right thing to do by many people. This discount was related to material possessions not some digital game currency. Blizzard should follow Razer on the right thing to do, especially since they were not directly financially effected by this bug.
Also, Razer did not honor any orders where people tried to buy hundreds or thousands of the accidentally discounted item. They honored ONE item, the rest were canceled. By your logic, Blizzard should let you keep the first piece of gold you duplicated and take away the rest.
Anyway, my guess is that you or someone you know happens to be one of the players who grossly abused the exploit and now you're trying to rationalize your theft/misconduct in hopes of keeping the stolen booty. Sorry, that's not going to happen.