IMO, he's definitely not under 10%. He's pretty smooth.
I think what Lee means is that, someone can have 3% bodyfat and still not have an 8 pack not that someone can have 3% bodyfat and not see their abs. I agree with that, but I guess what some people call an 8 pack, I call a 6 pack.
I don't consider the guy in the picture to have a 6 pack.