I've improved my method, by including the rotations archimedes is using, with the difference that it can also predict other frames.
Here's the bluray calibrated to the unaltered Legacy frame:
http://screenshotcomparison.com/comparison/139276
Here's the other three bluray frames from the Tantive IV scene, adjusted with this color adjustment model:
http://screenshotcomparison.com/comparison/139278