From the Dimension Style Manager, we can not only compare the difference between selected dimension style and the current text style, but also two different dimension styles.

Enter D and press Enter key to open the Dimension Style Manager, then select a style and click the Compare button to pop up the Compare Dimension Style dialog box, shown as below,

Using this method is more visually clear compared to text description, and we can select other dimension styles from the drop-down list, shown as below,

There i Copy button in the upper right corner, which users can use to copy the comparison results to Clipboard, then paste them to other applications such as a Word processor or Spreadsheet.