I checked it. There is no sector #3 in track 79 - and it is tested with XBIOS 8 calls - not some advanced protection and easy to override.
But really no sense to bother, since it is just same version as original (US) release, works in color and mono too, as org. In case of Battlezone it was additionally single file, so much easier to use.
Best is to send those STX images to Atarimania, together with cover scans, so they can add them there, because is good to have all releases preserved. Who wants to play this actually may be fine with nonprotected release, or God forgive me, with some spiced nefarioucy
Famous Schrodinger's cat hypothetical experiment says that cat is dead or alive until we open box and see condition of poor animal, which deserved better logic. Cat is always in some certain state - regardless from is observer able or not to see what the state is.