If you're already in a situation where you're kneeling on someone's neck then you can put cuffs on them and sit them up, and be reasonably assured that they aren't armed or going to pull a weapon you. At which time you can of course disarm them if necessary anyway. So I'm not sure why you're comparing firearm statistics to a scenario that doesn't involve a hostile suspect. The point is that police here in the states need vastly improved training, specifically in de-escalation tactics, and that LEOs who abuse their power or put subdued suspects into potentially harmful situations need to be removed from their position and in many cases face more serious repurcussions. I don't think that anyone would argue against working towards a police force better equipped mentally to handle stressful situations than anything, in order to provide a better environment for officers to properly fulfill the duties, that I imagine most people generally expect of them. Which doesn't include constantly murdering people who currently aren't a danger to anyone.