Because of WW1, it was feared that the inclusion of the word "German" in "German Shepherd Dog" would harm the breed's reputation and popularity (due to anti-German feeling). Thus the KC (UK) renamed the breed the "Alsatian Wolf Dog". The "wolf Dog" part was later dropped, but "Alsatian" remained a common name used for the breed.
Alsatian refers to the Alsace region of France where the dogs were popular once. In the late 1970s, the breeds original and proper translated name was readopted by the KC due to pressure from breed clubs who felt it did not accurately reflect the breed's origins, although the word Alsatian was connected with it until as recently as 2010 (see here - http://www.thekennelclub.org.uk/item/3367/23/5/3)
EDIT - I had never heard of an American Alsatian, but a quick google search revealed that this "breed" was developed in 1987 and is not recognised by any legit clubs. My instincts tell me that any new GSD "breed", especially one developed in America, is unlikely to be suitable for any kind of work, and so GSD clubs would (hopefully) put up a hell of a fight against having this dog associated with them (which it would be in many people's minds if including the word Alsatian), but I don't know enough about the dogs to comment, really, having never heard of them until right now. I'm starring this... interested to hear what others have to say about them.
EDIT 2 - Oh, hang on... are these what people call "Alsatian Shepalutes"? If so then yes... I have heard of them. They're not a real breed, no. They're a cross between a couple of Shepherds, Mastiff, and an Alaskan Malamut, I think. They were marketed as the world's only large companion dog or something along those lines (although how a mix of these breeds makes a companion dog is anyone's guess!). Just a big designer dog.
Sorry... my brain's not working today... took me a while to connect the two.
If they're not the same, then I have no idea, sorry.