How is it B.S.? It is grading you on your sportsmanship and I can only see that as a good thing.
Do you have a problem running the ball when you are up by three scores? Do you go for it on every fourth down? Do you constantly kick onside kicks?
If you don't do these things you probably aren't going to get penalized by Season Showdown. If you do in fact do these things please post your gamertag so I can avoid you.