A lot could depend on precisely what he says to the police.
You have the legal right to use deadly force if you genuinely believe you or another innocent person is at risk of death or serious injury. But not just to protect property.
If I was this man, I would make sure I explained to police that even though the man was running away from me when I fired, I was still worried he might come back, or that he might have a weapon in his own vehicle that he was trying to retrieve, so I was still in genuine fear for my life or that of other people.
Unfortunately some people have been known to tell police that “No, I no longer felt in danger” and that gets them into trouble.
It can also depend on the specific beliefs of the police officers involved. Some will want to do everything they can to avoid charging the homeowner, but there are others who will be looking for an excuse to do so.
More similarities than differences.
It is very close to what is the law in most states here.
Texas is a bit different, but most are very close.