And what country are you in where things like this don't happen?
This is mostly down to how your standard police don't have any firearms at all. So you could say things are at least a few places elsewhere a little different.
I'd rather deal with cops who might shoot me than cops who will definitely get a confession out of me if they want one.
"For 2012, the US Department of Justice reported a 93% conviction rate." -- https://en.wikipedia.org/wiki/Conviction_rate
In the US you can have your cake and eat it too: get shot by cops and have to plead guilty to avoid spending a huge chunk of your life in jail in favor of spending a slightly smaller chunk of your life in jail. America's the greatest country in the world (when it comes to injustice by the numbers).
Not very different from the US.
So, you're talking anywhere from (roughly) seven times as frequent acquittals to over 40 times as many.
"Not very different", you say?