This whole issue seems to revolve around whether this is supposed to be a game where superior skill/ratings should succeed at all times, or a simulation (what is the slogan under "What If Sports"?), meant to reflect reality where upsets do happen, often for reasons that cannot be controlled or are due to intangibles. I suspect the developers lean more toward simulation, despite the hard feelings of some of the customers. Not saying this is good or bad--just a philosophical difference.
On the other hand, maybe your team had Will Muschamp on the sideline for that game??