Congratulations!
Prestige wise, I wouldn’t put one above the other. What is it about the alumni network that appeals to him? Is it being a part of the Trojan Family and a large active alumni association or is it a potential for job connections? Is he interested in football games and having a team to root for?
Very, very different settings. The area around USC is not the safest. Does he like urban grunge?
Edit: Did you see this from 2020?