FYI - The reason that particular mount is made for Samsung's vs Sony's has nothing to do with the way the Display bolts to the mount. The mount is a universal 42" - 60" mount, and will fit just about any TV out there in that size range.
The reason that one is designed for Samsung models is in the way it's motorization is controlled, that one is set to be controlled from a Samsung remote through it's Ex-Link connection. Your Sony will not control it and therefore it could be useless unless it has a secondary way of control via a remote that comes with it.
I would do more research before purchasing.