I don't know about closer to the screen. But all of the guns appear to be Aimtrak internals, so the super LED bar should work with an existing Aimtrak setup.
However, I think I recall that what really lets you get closer to the screen is really the field-of-view of the sensor in the gun itself and the angle that the LEDs are mounted at relative to the gun.
It sounds to me like the "Super" LED bar is really just a higher power LED bar that lets you get further away for a large screen, rather than closer up for a smaller one.