Strength of schedule is calculated from the opponents projected fantasy points allowed for the LB position. The best rating is +16 which gives the player the advantage against the defense and indicates an easy opponent, the worst rating is -16 which gives the defense the advantage and indicates a tough opponent.
Carter is a trendy pick as an IDP breakout candidate this year, due as much to his situation as his talent. The 4-3 defense of Monte Kiffin is specifically schemed to "funnel" the ball-carrier to the weak side linebacker. It's a scheme that made a star of Derrick Brooks, and while not going so far as to compare him to Brooks, Carter has the speed and athleticism to take advantage of this favorable situation.