Here is the funny thing about pinfalls. They are very unpredictable. Last year, like this year, PSU were not big pinfellers in the regular season, but they still put up 6 at the tournament.
The 2018 team that had six of their all-time pinfall leaders (Nolf #1, Nickal #2, Retherford #3, Hall #7, Rasheed #16, and Joseph #22) only recorded 4 pinfalls in the tournament.
But then the same group got 9 the next year with 4 of them coming from guys not in the top 25 all-time for PSU.