The only one that can really be considered high art is ESB and that’s not to say that SW and TFA aren’t great films but if we compare those films to some of the all time greats they won’t hold up nearly as well as ESB would.
First, what is this “high art” crap anyway? Seem like some irrelevant snobbish thing that does not have any connection to the reality.
When it comes to comparison to other great films, I think ANH is the only one that can stand alone and be compared. Yes, ESB has more complex story and a bit better execution, but its story is completely dependant on the other two films and it builds on many concepts introduced in the original. Not to mention ANH was by far more culturally impactful and historically significant.
That’s fine and all but if we compare the movies in all aspects of film making and storytelling Empire towers over STAR WARS in my opinion as all that other stuff you’re talking about has no bearing on how I view a film. I rate movies solely on the content.