I have to disagree with you, he isnt just confident, it is at the level of cocky. All the interviews I've read about him he comes off as a real d-bag. He may not be but that's just the way he comes off.
And the pitchers throwing at him is NOT an excuse. Those pitchers are not the number 1 prospect, he is. Therefor he needs to present himself in a certain way because of the amount of people, especially kids look up to him. That is not how he should be acting, regaurdless of if pitchers are throwing at him or not.