To answer your question, I do not have a camp and do not represent anybody's interests. In other words, I have no invested interest here, however, just like you, I am entitled to an opinion and after observing a few matches at Easter Bowl, I can render it.
I do not know how much the other kids will grow, neither am do I care. Like I said in my original post, I am not proposing that the other kids will have an illustrious career in tennis. The other kids may play more tournaments, more matches, may have better coaches or better team around them, may have more money and etc. I am merely pointing out what this kid Deiton lacks. Now whether this is due to less play or for whatever reason, is irrelevant. I see a product in front of me that has already grown physically and is bigger and stronger than his competition (i.e, he has already developed) and yet is not able to dominate or even beat smaller, less developed and according to you, sucky players.
There are things that are a little late to teach at 14. Instincts develop earlier, so does the skill of anticipation, being quick off the mark, initial step in any direction. Deiton has good looking strokes that are not very effective, do not penetrate through the court, has very poor volleys and feels very uncomfortable at the net. He will need to improve in those areas to be able to beat better players in his age group. I am not even talking about the kids that are a year or two older, where Deiton's height will not be a factor and will not give him an advantage on the serve.
Again, I am not predicting any great things for the other few kids mentioned because it is early to tell since they have not yet physically developed or maybe will not develop as much as Deiton did. But Deiton did develop, did grow, has at least 4-5 inches on the guys he plays and his presence should intimidate his opponents. However, the better ones seem to figure out his weaknesses rather quickly and easily. And when Deiton is not able to dominate because he is bigger and taller, he does not have enough tennis skills or know how to fall bvack on!