Simply gearing the engine towards real life w/o considering the ingame element is a bad idea. GD did this and had the engine mirror real life in its 2010 update. The result was terrible, with top tier RB against terrible defense, breaking out runs like 1yrd, 2yrd, -1 yrd, 3yrd, 0 yrd, 2yrd, then out of nowhere, a long td for 70 yards. They did so to mirror the real life distribution, without any consideration for the talent on the field.
Mirroring RL just for the sake of it is bad.