Did you not see England v Australia at Wembley..? If you mean Origin he has only played twice...
I was at Wembley. All I remember Williams doing was taking somebody's head off. Otherwise, he was reasonably powder puff.
But he has. The claim that he hasn't done it at the highest level is one somebody made-up. When he played Origin, despite limited time and injury, he was causing chaos every time he had the ball. I cannot think of a person who's knocked people over every time he has the ball, in Origin no less.
In 'Origin no less' indeed, but it's quite a step up from there to test match rugby. Perhaps he can do, we'll wait and see.