Thank you for the responses. Looking at the CDS for Rutgers and Villanova, the SAT scores do closely match data posted by external sites like U.S. News and Niche:
Rutgers CDS 16-17 - Mid-50% SAT 1110 to 1350, GPA not available.
Villanova CDS 16-17 - Mid-50% SAT 1220 to 1420, average GPA 3.68 unweighted, 4.08 weighted.
I also confirmed that the CDS data is for enrolled students, while admissions info from Rutgers and 'Nova specifies admitted students. (I had suspected that already, but I didn’t notice the source of data from external sites.) In cases where less than a third of admitted students accept their offer and enroll a noticeable difference between admitted and enrolled students makes sense.