Penn State won't find anyone who can do better.
Take a look at the top teams all times in wins (D-1A program with more wins than PSU).... and the records...
Michigan 10-16
Ohio State 14-24
Alabama 5-10
Texas 3-2
Notre Dame 9-9-1
Oklahoma 0-2
41- 63-1
PSU has never really been able to sustain sucess (or be even) against the programs that have won consistently... I would agree 1-9 against OSU is frusrtating, but CJF is no different than any other PSU coach against the top programs.
Not sure what argument you are trying to buttress, but - based on your hypothesis:
Pre-CJF:
37-49-1
43% Winning Percentage
CJF
4-15
21% Winning Percentage
Your data do not match your conclusion. Not even close, obviously.
LionJim, obviously, can check the math.
FWIW:
Other Big Ten Schools all time winning percentages against the Big2:
Michigan State 35%
Illinois 27%
Iowa 25%
Purdue 25%
Wisconsin 24%
Minnesota 21%
But PSU, under CJF, comes in ahead of Indiana and Northwestern's all-time records.
(Last 10 years only - limited number of games, obviously: Michigan State, Iowa, Wisconsin and Purdue with better percentages vs the Big2)