Let's see you first present them. All your links show, as far as I can see, is that blacks are more likely to get shot by the police.
They are not backing up claims like "When an armed white person points a gun at the police, he is much less likely to get shot." For that your would need something like showing that P(person is shot|person points a gun at police AND person is black) >> P(person is shot|person points a gun at police AND person is white). And you have not shown anything like that.
You're kidding, right?
The studies in question directly compare what happens when white people confront police versus what happens when African-Americans are involved in a police situation. The articles gave you exactly what you asked for, so of course you're just going to stick your head in the sand.
Oh, wait.
I see what the problem is. I cited scientific studies. As a rightist, you believe that anecdotal evidence always trumps scientific studies with proper statistical analysis. Fine. Let's do this with anecdotes. In the link you originally posted, you will find a comment that directly references the counterexample.
Conservative hero Cliven Buddy got a bunch of his thug friends to rally to his side and a bunch of them pointed guns at the police. This wasn't just one person pointing a gun at the police, but several people pointing guns at the police. Notice how the police didn't kill any of those thugs? Heck, they didn't even fire a single shot.