I have previously written about what I think applicants should look for in a program: post #21
I believe the most important question an applicant should consider is whether or not he/she feels the program can inspire them to be the best version of what that person wants for himself/herself and also help him/her achieve those goals, while at the same time keeping him/her emotionally happy and mentally engaged.
I have previously written that I believe an individual's "radiology ability" is mostly influenced by factors the individual brings to the table, not the program: work ethic, study habits, emotional IQ. Post #284
I agree that that there probably aren't a lot of differences between program quality within "tiers" (see post #139). Which is why I think these program "rankings" are suspect in the first place. Look, what's the biggest difference between the so called "#1" program and the so called "#50" program?...the recruiting class, that's what. Your "radiology ability" at the end of 4 years of residency is mostly influenced by YOU, your work ethic, your study habits, your emotional IQ, YOU (again, see post #139). At the end of 4 years, if you took the residents who went to #1 program and instead made them train at the #50 program, they would be better than the residents who were supposed to go to the #50 program who ended up training at the #1 program. If you took the recruiting class at the University of Kentucky basketball team and had them play together at Wichita State--well, all of a sudden, you've got a national championship at Wichita State.
Forget about Schulze rankings and conventional wisdom--kick the tires, consider the factors that are important to you, and make your decision on where you want to be, rankings be damned.
But your question is a good one. Here are some factors I think differentiate programs (in no particular order). I highlight the few items where academic programs might have an advantage:
1. Geography: not an issue for you--both in the same city, you said
2. Faculty: I think subspecialization and experience are key metrics. Residents who train in programs where faculty are not subspecialized have less nuance in their skills. For residents who are lucky enough to be at a program where the faculty are subspecialty experts, residency becomes a 4 year opportunity to learn from "masters". You can't get that from books. The lectures are better, the "viewbox" instruction is better.
In general, academic programs have more faculty who are subspecialized and experienced. May not be the case in your comparison, if the private practice is a behometh organization like Advent Florida.
3. Pathology: You will be reasonably skilled at diagnosing appendicitis after seeing 5 cases on CT on call. If that's all you are seeing, you won't be very good at recognizing appendiceal carcinoid. You said case volume was the same, but it is not about volume, it is about pathology diversity. After you have seen 5 typical DVT studies, you are done learning from typical DVT studies, so it doesn't matter if you end up dictating 50 every night on call.
In general, academic programs have academic referral patterns from clinical departments, so see more variety of disease and more unusual presentations.
By the way, I personally think the trauma center stuff is overvalued (and I trained at a trauma center). It can overwhelm the breadth of your experience. Most radiologists do not work at trauma centers.
4. Organization of the residency: Dedicated program coordinator who makes your life easier, adequate support services, resources to attend meetings and network, all the ways the program makes your life easier/better. Not necessarily better at an academic program.
5. Brand: You get to ride the brand wave for the residency you complete. You finish as a below average resident at UCSF, no one outside UC knows that 5 years later when you apply for a job, they presume you are a star. You finish as the best resident ever at KPC Health in Hemet, CA, no one knows that 1 year later when you apply for a job, they think you are average at best.
In general, academic programs carry more brand weight than community programs, but it depends. That may not be true head to head in some rare markets.
So--I can't say about the head to head match up you are contemplating between the academic residency and the community residency you are contrasting, but those are the generalizations about academic programs vs. private practice programs that I think matter.
Your narrative had NOTHING in favor of the academic program. To me, it sounds like your decision is easy.