True, a buffing tool will assist in making the process more efficient. If you are looking for a specific buffing compound for your glass, these guys might have it.
[http://www.tdillctechnology.com/resurfacing-compound-set.html|TDI-LLC Technology - Glass, Acrylic, and Gorilla Glass Compounds]
It looks like they might be onto something in the arena of removing scratches on touch screen panels with different kinds of materials such as gorilla glass.
A little late here but I hope this helps someone else that comes across this post in the future.