Because he should (IMO) be the best batsman in the team. Yes, he's young, but then again, so is Cook. Absolutely agree that batsmen peak later, all I was stressing was that his performance over the Ashes has not been exemplary - if I were him I'd be happy that I'd proved that I was a fantastic batsman, and disappointed at the failure to convert. He should aim to average 55 against Aus, not be satisfied with 35.