ECA's fall under one's scholastic Q. This basically includes everything that normally falls under your typical college application, e.g. personal information, test scores, essays, transcripts, recommendations, interview and ECAs. The CFA is one fitness test (which may be retaken before the deadline as many times as one desires - your last being your official CFA score) wherein you can meet a minimum standard and pass, or exceed minimum requirements toward you Whole Person score (the quantitative competitive value of your candidacy including all three Qs). The DoDMERB exam, which is its own process of medically qualifying all officer candidates resulting ultimately in a Q or Unqualified status. I don't believe one's qualified status contributes to one's WP score (i.e., you're Q'd or not), but I dont have that on authority.
The WP formula is probably confidential, as the methods of scoring applicants in most colleges are. I have read here that the math test score (USNA only taking into account one's math and English scores from the ACT or SAT) has the single highest WP point value in one's application. Of course, how weighty that is is relative to how points are spread among the other scolastic categories. If true, it also leads me to believe that ones grades are not quantified as simply as your GPA and class rank.