Empire is an objectively better movie than Star Wars, world building be damned.
It is most definetly not objectively the best. I also think Empire Strikes Back is the best but for many others Star Wars is the best.
It’s like saying out of all the Star Wars fans out there who think Star Wars is the best versus all of the fans who think Empire Strikes Back" is the best, only one of these two groups is truly right. Your proposing that all those legions of fans who think Star Wars is the best are objectively wrong. You believe your opinion is a fact. That’s what objective means.
There was a divide among scientists on what was in the center of the universe, the sun or earth? Out of the two groups one of them was objectively correct. Their opinion is fact. Applying this to something subjective like art is nonsense. Though most people enjoy similar things about movies (good acting, witty script, stunning special effects etc.) it doesn’t mean that EVERYONE likes those aspects equally in the same importance. Some people interpret things differently. Some people will dislike how a character is adapted to film while others will like it. Some will think that a certain storytelling decision enhances a movie while others might think of the decision as a strength. Basically, if film is objective, then there is only ONE definitively correct evaluation for every movie. I rest my case.