We have some hard physical evidence, the audio file and the autopsy. The audio file records Wilson firing 6 shots in 2 seconds, then a 3 second pause, then a seventh shot, a one second pause, and 3 more shots.
(And if you're going to deny the hard physical evidence ... go away, cultist.)
Wilson said he began firing at a range of 15 feet, when Brown was already charging full steam at him. And that when Brown kept charging after the first volley, he opened fire again.
Even an overweight couch potato can easily manage 10 mph in a short sprint. Brown clearly could, since he ran at least 150 feet away from the car in around 10 seconds.
10mph is 15 feet a second. 75 feet in 5 seconds, which the time elapsed when Wilson said Brown was still charging full speed directly at him, demonic expression on his face. Yet Brown somehow couldn't even make it those 15 feet to Wilson in 5 seconds at a full charge.
Wilson was not backing up any significant distance. Forensic evidence showed all shots fired from the same spot.
So, Brown would have had to have been casually strolling, not charging, for things to have played out as Wilson claimed. The forensic evidence says Wilson's story is impossible.
Given the physical evidence and the majority of eyewitness statements, this seems to be the actual scenario:
1. Wilson chased Brown down the street, firing the 6 shots, winging Brown in the forearm. Autopsy confirms a back-to-front wound in Brown's forearm.
2. After getting hit, Brown turned around, put his hands up and started walking back towards Wilson
3. Wilson fired again, hitting Brown again.
4. Brown bent over and staggered forward
5. Wilson fired 3 more shots. Autopsy shows wounds with a downward trajectory, meaning Brown had to have been bent over.
That says nothing about Wilson's motivation at the time, it's just description of the facts, facts that say Wilson's story can't be what happened.