The Germans considered the Panther as a medium tank, but in IR battles it is a HEAVY.

"The range of average effective armor is based on historical classification of key tanks for the 1944-45 period. Class Width/Thickness
Heavy 80mm or more
Medium 42 to 79.999mm
Light 5 to 41.999mm"


http://www.bayareatankers.org/Intell...les_RCACN_.htm

And armor classifications:

http://www.bayareatankers.org/Intell...atified03_.htm


- Jeff