When I first watched the new clip, without the comparison video, I thought the third unit shot was not very well done - the motion and compositing looked unnatural and it didn’t look very detailed, as if it was out of focus.
It was only when seeing it alongside the original that I realized I had the wrong shot! The footage I had been looking at, of Vader walking away from the window and towards the camera was original footage and I suspect not much can be done for that without a complete re-shoot.
The actual third unit shot of Vader walking towards the bridge window was filmed and inserted so perfectly that I didn’t notice it was new.
Bravo!
trimboNZ, not sure why you seem to think the original Vader figure which turns to walk towards us doesn’t look good, as it certainly looks absolutely fine to me - in fact, everything about that whole shot has never looked better than it does now, I’d say.
(EDIT: it seems that adywan has responded while I typed all this out - and so I had to delete the rest of this post just in case I was revealing something I shouldn’t have…once I read what he’d said to you. I’ll need to check with him!)