YSU21,
It is interesting that you ask these questions. Hopefully you desire to learn a thing or two about college football at the FCS level. It appears that you want to learn, so let me say this:
10-15-20-30 years ago FCS football was not as developed as it is today. Most teams were run heavy (similar to how the Buckeyes are operating without Coach Tressel today). Offense was unimaginative (again same as the Buckeyes today). If you were able to run the ball on someone, well, you typically won as long as you had a defense that could stop the run. There was passing, but the spread was not part of the game. Everyone can correct me if I'm wrong, but Appalachian State was the first team to introduce the true spread to FCS football. Jerry Moore who is their current coach went to West Virginia and met with Rich Rodriguez to learn the spread. App State uses the WVU spread exactly. Prior to his staff learning the spread, he was a 1 and done coach in the playoffs over many years. That style of offense caught on in the FCS and BCS levels over the past 10 years. the defenses are catching up. (This is a whole different subject that has to do with size and speed of defensive personnel from then to now for a different forum)
In the past a QB could win a NC being a good game manager because of the people surrounding him and the style of offense employed. Individual records were not as big of an emphasis as it is today; and certainly the passing game was not as prominent. At the end of the day, great defenses win championships at any level of college sports. Many of the fans that post on this board understand this and this is probably the reason why people don't ask the question that you ask. It is a good question, but the QB is dependent on the ability of his receivers, the play of his running back, and most importantly the play of the offensive line. The QB's stats depend on the style of offense being run and the strength of the team. As you stated, it is a team sport. You can have an all world QB, but if he doesn't have an OL, good RB's and WR's, it really doesn't matter. Finally, from year to year, teams have different strengths and weaknesses and different identities depending on the coach, which makes it difficult to measure QBs from year to year or decade to decade. Does this make sense to you?