why does the Icon for Illustrator template file in bridge looks smaller than the .ai file?

[Stilly000]

Why does the the icon in Bridge display the .ait file different and smaller than the .ai file?  see attached screen shot for my example. They are both 8.5 X 11. Am I doing something wrong in the saving process?  Thanks.

[Srishti Bali]

Discussion moved to Bridge​

[Stilly000]

Hi I can't find my question in the bridge forum?  Has it been answered yet?

[jbm007]

because the thumbnail resolution that is generated is different for each file format.