Judging by the changes made to the Blu-ray, it's my opinion that we got the 2D versions of what would have been released in 3D. Besides, why would they need to do "Restoration, Mapping, and Dirt Picking" the already way too clean 1080p Blu-ray masters in 4k?
Cobra Kai said:
That staffer's resume indicates that she worked on it starting in september of 2012. If that's the case, then I bet this was just a new SE master for the 3d releases that were eventually cancelled.