All of this is subjective dude; you outta know that. Personally I don’t see how anyone could make the case that ROTJ is better than SW or ESB but hey, that’s their opinion. No one is really right in this situation even if you bring forth a stronger argument.
Oh, no way in hell does it surpass the original two. I just consider it my third favorite. I’m of the conviction that it’s a worse made film than the two current Disney films, yet it’s overall more enjoyable.
It has bits of everything I love in the OT: the three principles, Obi-Wan, Yoda, Vader, Palpy, Space battles, etc. and I also just like that it’s the grand conclusion to everything.
It tightly compresses all the best parts of pre existing films in a feature length runtime, albeit using hackneyed writing and retreading of familiar ground at times, while still serving an important part in continuing the story. Wait…that sounds awfully familiar…