They will take the highest score in each area
That is incorrect. USAFA will superscore, but AFROTC WILL NOT superscore. AFROTC is best sitting.
I would still submit them and let AFROTC determine which is the best sitting. In this case I would say they will take the 2nd as best since the superscore is higher. His M would be a 31, and not the 33. 33 would be used if they superscore system.
That being said from the PAR aspect a 32 best sitting is at the high end of the spectrum for AFROTC scholarships. They use the WCS (Whole Candidate Score), and care about their intended major, which is important to understand. A candidate with a best sitting of 32, uwcgpa of 3.5, top 15% of the HS class, majoring in a non-tech curriculum, and no sports or no leadership can find out that they went from a type 1 to a type 7 very quickly. Hence the word WHOLE in the WCS.
Good luck. Personally for me, I would submit it and move on to getting their medical records in order for the DoDMERB exam. Not saying he will get a scholarship, but if offered one, and not applying for USAFA, they will send him to the exam upon awarding the scholarship. If there is something in his medical records that flags him for a remedial or waiver it can take as little as a few weeks to as much as several months. This is important to know because come May when you have to make a deposit for his #1 college, if the only way you can afford him/her to attend is the AFROTC scholarship than you don't want to be waiting for the waiver to know if he can contract in the fall.
PS: AFROTC is not like USAFA. They do not care what district or state you come from. If they have 1000 scholarships to award and all 1000 are from Cali, than oh well. It starts and ends with a national board with no preference to the states. They are also not like A/NROTC where they portion out to units how many can be on scholarship. Just like the state aspect, they could care less if Notre Dame had 100% on scholarship and Timbucktoo University had 0%. The scholarship is tied to the cadet and their major, not to the detachment. They do have in common one thing with NROTC. 80-85% of recipients are tech aka STEM majors.
~ Do not try to game the system and put tech as intended major thinking that in the spring of their freshmen year they can change to a non-tech major. It is beyond rare that they will allow them to keep their scholarship if they go tech to non-tech. That becomes a problem if you need the scholarship to attend that college.