anyone know the difference between the difference between the solomon scream and x-scream

anyone know the difference between the difference between the Solomon scream and x-scream series skis (they are old skies) . Are they one of the same.

If you look at the solomonarchive.com the 2004 salomon X Scream Series and

the 2005 Solomon Scream sure look the same. Of course, some of the skies of the two series look quite different through the years.

Was there two series that merged at the end? Is the 2004 salomon X scream the same as the 2005 Solomon scream the same ski??(the yellow ski with the prolink).

thanks