I remember that story being discussed months ago, and I seem to recall some doubt as to whether he was really targeted because of OC, or it was just a coincidence.
But for the sake of discussion, we'll say he was indeed targeted specifically because he was OCing. That's one,
ONE incident, out of tens of thousands, maybe more, openly carrying firearms for a sum total of decades across the U.S., with no such incidents.
We have the same number, maybe more, of verified stories stating that a crime was averted
because someone was OCing (
http://www.examiner.com/gun-rights-in-atlanta/open-carry-deters-armed-robbery-kennesaw was the most recent one I can think of). If that feller had been CCing, he would have had zero effect on preventing a crime. I'm sure you can find other examples by perusing the "True Tales" section of OCDO.
To sum it up, the deterrent effect of OC is demonstrably equal or stronger than any supposed danger of being targeted by a criminal because of OC. I'm not going to tell you how to carry - if you want to CC instead of OC, fine. But I ask you not to spread hype about imaginary dangers. The subject has been beaten to death on OCDO.