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Ask yourself.. what is the goal of going to these big events for the player (and parent). Most often, it is some combination of getting exposure to recruiting coaches, playing against better competition, seeing what the player is up against in the big pond and getting comfortable in that setting. What is the goal of the college coaches who are there? They are looking for players who are showing the skill set, talent level and mental makeup that can help them win games at the college level. Most 14 y.o.'s aren't far enough along in their development yet to show that. Some are. Some will get there in the next few years. Some won't.
Assuming your son (and parent) has a decent plan for his college recruiting efforts, he will end up at the level he belongs, based on his talent, skill set and hard work. It really won't matter one single bit how much older or better the kids were when he played at WWBA at 14. In fact, if anything, it will only help him down the road.
It's all about perspective. Most often, parents' perspective bleeds down to the son/player. If the parent feels the player is at an unfair advantage because he is playing against older and/or better players, the son will be more inclined to think he has no control of the situation and will buy into being slighted. If the parent sees the positives and fuels the fire - pointing out the tremendous opportunities, seeing where the bar is set, showing where son is already competing on many levels with these players, stating how great it is that he is able to play against better/older competition so that his improvement will fast-track, illustrating in black and white what efforts will be required to reach that level and encouraging him to do so, then you will have a motivated young man, prepared to put in the work it will take to maximize his abilities. Which scenario do you want for your son? Which scenario will your son want?
Get some rest and start lighting the fire!