Not enough data to say one way or the other. It'd make an interesting study. Maybe we could forward the suggestion to someone like John Lott and see if he has any data that might sway the debate a bit.
There may not be enough dats for a peer reviewed journal study, I’ll grant you that.
However, reading the daily stories, one is hard pressed to find ANY examples of people who OC being jumped, whereas this is a fairly common occurrence with people who CC, using stories I have seen here as a guide.
One other thing to mention, with the ubiquitous cameras of modern society, if a perp was not killed outright, attempting a gun grab, he would be looking at guaranteed jail time for attempting a grab.
Why would a perp do that if there are easy pickings down the road?
The answer from the other side on this one is always the same: crickets.