There is a great abundance of Star Wars fan films and honestly I don't like most of them. Some of them have too fake fight scenes, some are too long, and some are way heavier on VFX. Most of the time it's all about showing the result from a "how to make a light saber in Premiere" tutorial. But this short film is different and I liked it.
No, it's not in the gear. Although the film was shot on expensive cameras it's not the gear that makes the film. Look at the camera angles. Look at the camera movement in the opening scene. Listen to the sounds and the music. See the fight choreography. See how the actors played their characters. See the VFX and color grading. There's so much going on and all of it is packaged in a nice story and that makes the film captivating. Could they shoot it with a DSLR? Absolutely. Would the audience notice? I doubt that. Imagine all of that shot on an ARRI Alexa with bad sound, awkward camera angles, and bad acting; it would be a total waste of their and our time.
It's also quite interesting to take a look behind the scenes and see how it was all shot:
Be sure to check out the YouTube channel of BigPuddleFilms for more content like that.