I added it up and with 10 minute quarters I get about 105 plays per game if my running game is working and 115 if it isnt.
EDIT: though I guess there's a better way of explaining how the cpu and I pass in my games. The CPU, in the five season game's I've played has averaged the following yards per pass attempt: 5.6, 10.1, 7.6, 12.3, and 6.7.
I have averaged the following yards per pass play: 7.0, 7.0, 17.7, 8.7, and 7.1. (In the game where I threw 17.7 yards per pass, I only threw 7 passes).
So for me, the CPU is averaging about 8.5 yards per pass play and I am averaging about 7.5.
EDIT: The NFL average of yards per passing attempt is 6.3. Your averages are 8 for user and 9 for cpu. Therefore, from what little data I have now, we are running between 2 and 3 yards per attempt higher than in the NFL for cpu and between 1 and 2 yards per play higher for user.