In this situation, it must certainly would have. I don't give a shit about the volume differences. In this situation, better training and subsequent aiming for a leg (or how about just not shooting him?) turns this from a page 2 story in the local paper to an execution-style murder getting national attention.
Sometimes life is just about effort, bruh. They didn't try or otherwise make any real effort in the end to protect his man's life. Their job was to do exactly that, and not only did they fail but they did so spectacularly. Their purpose as police has been lost over the years, it seems. This should never be the outcome in a situation like this and whatever retraining and expulsions that may be needed to their reason for existing ought to be pursued with vigor.
Again, they're little more than an occupying military presence right now. No relationship, no compassion, and a clear disregard and disdain for the citizens they're tasked to protect. With that combination, results are unsurprising.