I'm sorry, he takes beyond terrible angles and can't track the ball. There's absolutely no getting around it. He's FAR from "Good at worst" I mean come on.
He has the stiffest hips Ive seen on a starting safety, he can't track the ball, and he's prone the mental lapses when he takes his angles. You see it every single week. Some times it's more noticeable then others, including the Raiders screen pass that went for a TD (when Clemons took out a defender from making the tackle... yet again!) to when he blew a coverage against Stephen Hill that should have resulted in a TD until Sanchez overthrew it.
He's a great tackler now and I really like how he plays the run. That's it. We absolutely need to upgrade the FS position, though.