Strength of schedule is calculated from the opponents projected fantasy points allowed for the DL 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.
Wimbley entered 2012 with big expectations after signing a big free-agent deal with the Titans, and by just about every conceivable measure he was a miserable failure. However, that lost season should help acclimate Wimbley to playing with his hand down. In Wimbley's case playing fewer snaps in 2013 may actually be a blessing, at least from a pass-rushing standpoint. In any event there's enough chance for a bounce-back year for Wimbley to merit a look as an upside IDP DL3.