You use Sheet Metal Defaults to apply different styles to the active sheet metal part. The changes are local to the part.
Because you saved the styles you created to the Style Library, they are available for application in this part.
The Thickness input field is disabled, and the thickness you specified for Sheet Metal Rule Style Test is shown in the field.
The bend radius is 0.121 in, per the style specification of Thickness * 1.15 (0.105 * 1.15).