But he’s not the best.It's ok for both things here to be true
1. Brock Purdy is the best ISU QB ever easily and having him for 4 years was good
2. Being the best QB in ISU history is a bar that's barely above the floor and overall he wasn't that special when it comes to college QBs
It is okay for these two things to be true:
1.) he’s not the best qb in the last 20 years, let alone program history
2.) he is the most accomplished QB in program history.