One more thing.. Comparing Harmy's 1080 and 720 example (above) I concur that there is no difference in detail between the two.
Not Star Wars related, but now I'm thinking of all the assholes at dvdfile.com and thedigitalbits.com (with the exception of Robert Harris) with their group think and less than 20:20 vision (not bragging here but my vision is perfect) who over the years have 'dictated' what is quality and what is not quality. Not that these mentioned sites are influential these days but they once were and I always thought they were wrong. They were wrong. They didn't know the difference between a compression artifact, a macro block, and a pixel. Seriously. I wouldn't trust any of their recent reviews either. Just saying...