It can depend on the history of the item entry. If the barcode was put onto the entry when it was created, we will honor that as being what the entry should be. If the barcode was added later, say in the example of a game with no TLD, someone went and put onto the entry a barcode for some version of the game that is not the English version, then we would remove the barcode.
And remember. The TLD is only needed for game titles that have different releases in other countries. If you happen upon a game that has a localised title, and that game was not release with that title in other countries, it wouldn't need the TLD. For example, a game that was released in Poland that got a Polish language title wouldn't need [PL] in the name because it wouldn't have been released with that title anywhere else. In these cases, it can be noted in the description field where the game was released.