Good post - agree, it's mostly a wash/personal preference. To me, as far as recruiting goes, it boils down to this: When was the last time PSU was #1 in the country in recruiting? Ki-Jana's class? Here is some data:
Using all of the available Rivals Recruiting data going back to 2002 (and through 2019) - which is 18 years, USC and PSU aren't even in the same stratosphere wrt recruiting. USC's average class ranking was 6; Penn State's was 27. USC had three classes that were not ranked in the Top Ten (twice finished 13th and once 19th); by contrast Penn State only *finished* in the Top Ten twice. USC had five #1 ranked classes (2015 the most recent), including three in a row and went 10 straight years without finishing lower than 8th. Penn State's 2003 class was ranked #92. Penn State has also had 10 classes (or more than half of the years covered) ranked outside the Top 20.
One more fact: According to Rivals, USC had 56 five star players from 2002 - 2019. Penn State had 9. In 2004, USC had 8 five star players in their recruiting class.
The elephants in the room for Penn State are a) Joe's 'dark years', b) the sanctions, and c) Ohio State (who is our primary recruiting rival and probably recruited better than USC over this same period of time). Even if you look at Franklin's stellar performance over the past five years, where he has *one* Top Ten finish, USC has three over that same period. Oregon is probably USC's biggest competition out west - in this same time frame, they only finished in the Top Ten twice, and have an average class rating of about 22. Most of their top players are guys USC passes on from California.
It's all totally speculative. But, USC is a premiere job - certainly the best on the entire West Coast when you consider all criteria. Recruiting isn't everything, but ask Saban if he prefers Michigan State to Alabama.
Good talk!
EDIT: Ran the numbers for Ohio State - they come in at an average recruiting ranking of about 10 (some really bad years from 2003 - 2011) noting they had seven consecutive top ten classes (2012 - 2018) and had 30 five star prospects from 2002 - 2019.