I was one of the first to use the O7 Brady with good sucess (52 td's I believe), so I know how to use this player. But on the D side of the ball I love using my 83 Cards D against him even though this D has an 18 rating on drive. I believe that the higher ratings in sack and interceptions really come into play here, but not just with the 83 Cards. The 52 Pack and 85 Cowboys may do even better.
To answer your second question Tom, it only works if you score.