How to make font size 14 to have actual size of font 13 ?

Your font has lost its hinting:

Use the method described in This Tutorial Thread

To scale a font down from 14 pt to 13 pt

  • Edit, Select Composites
  • Edit, Invert Selection
  • Format, Settings, Header, and set funits/em to 2206 (2048*14/13) (assuming it is now 2048)
  • Edit, Copy
  • Format, Settings, Header, and set funits/em back to 2048
  • Edit, Paste

Be mindful that modifying Microsoft fonts is not permitted. Do not redistribute it to anyone.