I reckon he's a decent half, just not a dummy half. Not being able to pass well to both sides has 'grown up playing in the halves, on one side of the field only' written all over it.
I get the feeling that his first thought as a half is "what can I do" and when nothing is on, he then looks to players outside him.
A natural half will always back himself, but his first thoughts are how can I create something for my outside players, how can I set them up.