My wife and I were at a formal event dinner banquet related to her med school. We were in a small group chatting: On one side an Air Force ROTC med student in his dress uniform and his wife. On the other side another med student and her Navy NCO husband in his dress uniform. I remember distinctly that the Navy NCO kept politely saying “sir” when he addressed the Air Force ROTC.
The Air Force officer mentioned that he got a “light” version of basic training. The Navy NCO said nothing. His ROTC’s wife added that it must have been petty light, because she remembered a call from him where he mentioned that they ran out of ice cream.
Having been through both: AFROTC field training is about half the length of USAF enlisted basic. In fairness to the cadets, they attend training throughout their college years before and after Field Traning - the whole experience is more of a slow long ramp of goofy BS that tries one's patience in ways most enlisted troops won't quite comprehend until they're an experienced NCO. It's also much easier to "just be a number" and muddle through enlisted BMT. Try that in officer training, and you'll be ranked bottom of the class with limited career options.
In terms of physical exertion, enlisted BMT is a bit more intense. Job-specific training might be much more intense, for the handful of AFSCs that see ground combat.
The Air Force officer mentioned that he got a “light” version of basic training. The Navy NCO said nothing. His ROTC’s wife added that it must have been petty light, because she remembered a call from him where he mentioned that they ran out of ice cream.