The following charts compare relative defensive positions. When comparing a thirdbase man's defense value against a shortstop's defensive value be sure to subtract what you think would be a baseline rating for that position. If you think a baseline shortstop is 2e10, then subtract that rating the rating of the shortstop you are comparing. Likewise subtract the baseline thirdbase man's baseline from his rating at third base.
The values listed equivalent rating values that are used in the Draft Guide and the Draft Simulator. The Draft Simulator has the following charts incorporated into the player values.