It suffers from much of the same stilted dialogue, unnatural editing choices, chemistry-less acting, and violating of the "show don't tell" principle as AOTC. We were just ready for it, looking forward to certain plot events, and denouement is going to be more satisfying than the middle chapter. There are also a few very moving visual sequences.
Oh, also throw in the fact that George just decided to retcon entire interpersonal relationships from the OT and further shrink the universe by having Yoda and Chewie be old Army buds. Then, let's also not forget that Padme's entire subplot ended up on the cutting room floor.
Finally, and in conclusion, Buzz droids are very stupid, and The Twilight Zone did it better.
Twice.