Hi Wagas,
Nope, not really the same. As I said, mine is like the second & third picture in the link I posted. General differences based on the picture, on mine - the body is longer, finish seems much better, there are two holes at the pivot that allow you to increase or decrease the jaw opening, and the bolt is from the outside. Not sure what all the differences really mean, but .... increased leverage associated with longer jaws, better finish may equate to better quality casting & materials, and jaw adjustment may allow you to apply pressure closer to 90 degrees.
It's funny, but Samstag sounds very familiar, and I may have gotten mine from them several years ago.
Regards -- Roger