I think it completely depends on how you define a better job. Money, tradition, fan/admin/booster support and expectations, location for personal reasons, location for recruiting reasons, conference affiliation, divisional opponents, ease of winning big, etc. I don't think people should look at history when determining what's a better job in 2020 and beyond.
1. Money - All big time programs are going to be about equal when it comes to this = Wash
2. Tradition - Shockingly similar win % over the last 50 years (.723 for SC and .731 for PSU), SC has a lot more Nattys but if you only go back 40 years, it's 2-1 in favor of SC. Bowl records are almost exactly even, and conference/division titles are heavily in favor of SC. = If you're staying semi recent, this is a wash, IMO, maybe a slight lean to USC
3. Fan/Admin/Booster Support and Expectations = Lower expectations at PSU probably. Fan support definitely goes to PSU = Edge is PSU
4. Location for Personal Reasons = Who knows, but LA is likely more desirable for most people, outside of population and cost of living = Wash
5. Location for Recruiting Reasons = USC is the no brainer, although PSU recruits nationally and that area of the country isn't devoid of talent at all = USC
6. Conference Affiliation = For monetary purposes, PSU by a mile.
7. Divisional opponents = USC by a mile
8. Ease of winning big = USC due to the easier division and recruiting advantages
I think the biggest ones for being considered a better job are 5, 3, 7, 8, 6 - in that order - which adds up to a 3-2 advantage for USC.