You are probably right in that it won't change the results on the field. However, one of the main reasons given at the beginning of the season for Jennings at QB over Davis is Jennings had game experience over the other QB's on the roster, even though the other QB's on the roster knew the offensive system better because they had been in the system longer.
So if Davis or Nixon or whoever presently on the roster doesn't get game experience, then next season, a month before the season begins, we will bring in another graduate QB from some other university that sucked at their university and was benched because they sucked there, yet played in more games than our QB's on our roster and will get the start over our present QB's who have been in the system for 1, 2, or 3 years....
Jennings should have never been given the nod over Davis or Nixon or whoever because he didn't have time to learn this system. Plus he really does suck and he will only be here for one year whereas other QB's on your roster will be here 2 or more seasons. Give them the opportunity to get "game" experience so we don't have to go through this every year.