Urban Legend?

Longtime back I heard that the fate of the rider can be made out from the position of horse's feet in equestrian statues!
What I had heard is quite interesting: a statue that has all four of the horse's hooves on the ground means that the rider survived the battle without a scratch. One foot raised means the person was wounded but survived, and both forelegs raised indicates that the man was killed.

Little bit of googling said that all of the statues at Gettysburg Battlefield infact follow this 'rule'.
Though it may feel that the choice of the pose of the horse is purely an artistic one, the sculptors might have been influenced by the so called rule!