Different type of midlife crisis. Maybe instead of driving a Lambo, you could settle for watching a Rambo.
We have the same ranking order.
I don't think it would've made any difference. Close Encounters was pretty much a terrestrial film, capturing the imagination in a completely different way. What made it compelling, imo, was the narrative and the way it taps into our existing curiosity and fascination with the subject matter.
Star Wars, on the other hand, was a fully immersive fantasy right from the very first shot. The world of SW was like taking the colorized section of Wizard of Oz and removing the dream context, setting it in space, and making it way more expansive (and much cooler).
Close Encounters is more like enjoying a gourmet dessert, where Star Wars was like a pure and total sugar rush from gorging on candy. Would having dessert on the evening of Halloween take away from the bouncing-off-the-walls effect of a trick-or-treat haul later that night? Not for me it wouldn't.