I guess the Germans have a genetic predisposition to regard the round heeled French girls as "desirable"...Many of today's "French" ladies must still carry WWI and WWII German genes.
"Easy" and "Desirable" must be interchangeable...
I can understand that the German's were impressed by how easily the French girls threw their feet into the air -- it was simply their reaction to the chance of sleeping with a WINNER for a change..... Nothing more....
The Americans were greeted the same way, and had sloppy seconds...
Semper Fi