There is no denying that he is an over achiever. Is he the captain/president of these clubs at the same time/same term? If that is the case, it can be easily construed in a not so positive light. Some schools purposefully limit how many leadership positions a student can hold, to prevent monopoly, and give other students a chance to shine. In the Common App form, there are only 6 or so lines reserved for EC activities. When it is time to apply, it pays to selectively limit the activities in writing instead of listing all of them.
