"According to statistics of the American army, destroying a Panther
costed five Shermans or about nine T-34's."


Does not matter,Allies could counter Germans with 14 to 1 numerical
superiority.
One Panther could kill five Shermans,includive crews but the sixth one will
kill the Panther antway.
Since Civil War "overwhelming power" means not quality but quantity in US.