Has your son visited both campuses? I think ideally that would be most helpful bc there are likely more things in common or that overlap than that are significantly different between the two.
The biggest difference could be based on what major he is likely pursuing.
Getting his gut feeling to being on either campus could be very meaningful to making a decision.
I attended UF (undergrad and PhD) as did hubby (multiple UF degrees).
S21 accepted to both but ultimately chose to go OOS due to his major (and wanting to leave his home state of Florida).