You're asking a question that can't be answered. Sorry. Why? Because of comparing apples with sneakers and coming up with a pickup truck.
First; realize that academics is basically 60% of your score. However, just like some schools "WEIGHT" their GPA's.... Think of the academy as "Weighting" your academics. Part of your application is for your high school to send the academy a copy of their school profile. The academy uses this, gauge your academics. They look at the classes available in your school; to the classes you took; to the grades you got; also compared to the Post high School history that your school has. (How many kids go to college; to what TYPE of college, etc...). They also compare your class ranking; how big your class is; etc... All of this gets figured into an academic score.
Basically, a 4.0 gpa from east high school in Wyoming, is NOT going to be worth exactly what a 4.0 gpa from central high school in texas is worth. It can't be. Plus, your AP Calc, AP Biology, AP History, Regular English, etc... has to be compared to the applicant with their IB Math, IB Biology, IB History, etc... and also compared to the applicant who's school DOESN'T OFFER IB OR AP CLASSES.
The best you're going to get for an answer is that once the academy gets your GPA, they will either 1) Leave it at the GPA it is: 2) Make it a higher GPA because they weighted your classes higher. or 3) Make it lower, because your school already weighted your gpa and it's too high based on the academy's standards. But the GPA on your application by itself means very little. It gets combined with the SAT/ACT, Class Rank, Difficulty of classes takes, course load, etc... and they come up with an "Academic Score". You do NOT get to see this number, ever. That score will count for 60% of your total score.
I can say however, logically, that a 3.4gpa and 33 ACT is better than a 3.5gpa and a 26 ACT. But is a 3.4gpa and 31 ACT as good as a 3.9 gpa and a 28 ACT??? Too hard to say. Sorry for not really answering your question, but you were leading for a simple answer, and the scoring process of comparing 50 states, thousands of school districts, and tens of thousands of high schools just isn't that simple. Best of luck to you. mike....