Football has only 12 regular season exams. Baseball has around fifty.
Not the same sport, not the same anything as pitching has so much to do with the success and failure of a team. You need four good ones to have any kind of season.
Your fixation with how unfair P5 rank are is without foundation. Generally P5 teams do not play G5 teams they fear would beat them, and of course almost always at home instead of the road. Still over the course of about 120 games a year that P5 play vs G5 it is not close in scores or wins. Given home teams get a three point gift the typical score is far greater than three when the two play.