Originally posted by The Pict
Sure he couldn't control it but he'd still be able to react to it here. He's not in the comic, but a forum match up srug
But it's not that he chose not to react to it, it was that he couldn't. Dr.Manhattan might see what's going to happen, but he can't act on it. If he sees Hal shooting him with an energy blast he can't dodge it, he has to take it.
I still think no single character in the JL could take the majority from him. It's just that his "clairvoyance" won't work in his favour.