I never got either, and I know that I am intelligent. When I took the practice tests for the GED recently, I got a perfect score on all but the math, and I left school 20 years ago.
I will be getting my GED, as soon as we can afford it, but that is for my own satisfaction. I've managed just fine without it for 20 years now.
My point is, would you know, if you sat down with me and with a college graduate, which of us was which?