Barry has been scared to shoot a lot this series. Luckily it hasn't hurt the Spurs because everyone else is playing well. But honestly, I've never seen a guy able to guard himself as well as Barry does. Even if he's wide open, most of the time he won't face the basket and will drift toward defenders so when he catches the ball it doesn't appear that he's as wide open as he is.
Luckily, he's a pretty good passer (other than the times he gets nervous and throws stupid passes). Defensively, he's trying hard but has made Lindsey Hunter look like an All-Star at times.