same difference

In the pictures of the Yybichy dance we frequently observe the same difference in the heads.

It seems to me to be very much the same difference as that between a man and a sheep, but Prichard makes no such remark.

I wonder whether there is the same difference between myself at home and abroad.

The same difference is to be found in the training of families.

The same difference as between the statement of the same crude fact in French and in German.