The maple board of course enhances the snappiness of the bass, but even without it is still plenty snappy for a Gibson and some people might prefer the more rounded tone of the ebony board. To me, an ebony or rosewood board will always look more valuable than a naked maple one, but that is just visuals.
That said, if you are happy with the sound and looks of your maple board G 3 there is no reason to go after this one.
Uwe