I have a little insight, as I retired as a Naval Aviator. My son is at USAFA, and will hopefully commission this spring. DS was in a similar situation. He choose USAFA. Not sure why my son selected USAFA over USNA, but I was happy with his decision. I felt the Air Force had better "back up" options than the Navy. After watching the AFSC assignments, I believe USAF does offer more options.
Both USAF and USN are wonderful options, with unlimited opportunity. I have been impressed with the aviation emphasis that USAFA offers. Sounds obvious. DS while at the academy has soloed in glider, soloed in powered flight, and working on his private license. Not sure the navy will have that type of aviation emphasis. I have said, "The navy would be a great organization if it did not have all of those ships".
As aviators, we like to think we are the top dog of the food chain. Remember, aviation in the USN is an after thought. Ships and Submarines come first, actually I think submarines are the primary emphasis.
I am not sure of the aviation opportunites at USNA, but I was impressed with the odds of a pilot slot a USAFA. I have also heard rumors of a "NUC draft"within the navy. You qualify(engineering major), you go Nuclear Power, based upon the "needs of the navy".
Look at both, ask questions. Follow your dreams. If it is your life long dream to fly at the boat, go navy. If you want to fly, the air force offers a great opportunity.
I would also think about your back up plan. What if you can not fly? Will you be happy with the remaining options?
Good luck!