Well, look at it like this. They focussed heavily on offensive styles and especially the spread offense. So, I would assume they looked at the gameplay elements dealing with the spread so it was in the game in a realistic manner. This is probably why we have seen a new fatigue system, or a more effective on in the videos. They made if actually work correctly so while Missouri ran it and made your D tired, they'll also be getting tired themselves, so its a reward and risk type thing. Running it has benefits, but your offense also has to have more depth to it because you skill players will be getting a lot more tired than the traditional offense and I would say your lineman will probably get gassed pretty fast too.
I can't wait to see how they have implemented it and tweaked other areas of the game so it works correctly.