Jump onto Stan sport and watch the 16-16 draw against NZ last year. I did recently, and he was shockingly out of his depth. JOC was good, but holy shit, watching it again without the emotion of the moment, he was...not an asset to the team.
The answer is Ioane's handling. William's is infinitely better when he's allowed to be himself and speak like the South Auckland MAGS boy he is rather than trying to ramble on about superficial stats and whatever else is on the script the producers are giving him.