This is plain wrong – ROTS had many, many parallelisms with ROTJ. Much more so than anything in the first two prequels.
I don’t share Tuckerfan’s view that this represents a serious flaw in the film, however – it was very pleasing, at least on the first viewing. There was an awful lot of it, though – enough that in my first post after seeing it, I wondered if the movie would stand up to a lot of repeat viewings, since a lot of the fun came from those little deja vu moments. That remains to be seen, for me at least, but even if those aren’t as much fun the third or fourth time around, that’s probably okay.
I’ve read all the scripts, I’m not sure what point you’re trying to make. The script underwent many revisions. If you think there are no parallels between the early drafts and the finished films, you haven’t read them. The draft you quoted from was rewritten because it had too much action for one film – but if you don’t recognize elements of all three films in it, you aren’t looking. Yes, characters are switched around. Yes, the names are changed. But, shit, you’ve got proto-wookies (called jawas in the script, but furry, eight-foot-tall forest dwellers,) one of whom is partnered with Han, rebel against the mechanized army on the surface of the planet. In that script, they commandeer tanks and, later, spacecraft, and take part in the assault against the “Space Fortress” that threatens their planet. That planet is called Yavin, and the whole wookie subplot was cut from the climax of the first film, hinted at only by the forest canopy scene on Yavin base. The relationship between Han and Chewbacca was there, although Chewie was originally called “Bama.”) While the proto-wookies mount an assault on the space station, Justin Valor and an officer (Prince Valorum? I get confused,) stage a rescue mission to recover the Princess that Vader is holding. They are cornered, but escape by jumping into a garbage masher, and manage to flee the station just before it is destroyed. There are plenty of parallels.
No, they didn’t begin filming with that script. The script was revised half-a-dozen times before the production phase of the project started, and many things were changed.