Ahhh.... Haaa!! You totally missed the scientific engineering marvel of the X-2. Keep in mind that it's a floating clamp system. Therefore it does not require the same amount of space beneath the racquet to accommodate base clamps and rails. So the X-2 reduced the flex from a vertical steel bar by minimize spacing from the center by orienting posts away from center.
The 940 on the other hand needs all the space on the turntable for clamps and rails. So posts are farther away. Plus the metal sheet base is horizontal with only rolled edges for rigidity. Try this out, remove the posts on your machine and put your palms on each end give it a weight test. Report back your findings.