Interesting... new technology... I will have to try this one out for some things.
I doubt, however, that when the scratch is deep enough to require the "healing" that we have traditionally done by burnishing, scraping and limited area polishing - that a tool this large would do the job -...
Find someone who actually KNOWS how to use tiny scrapers, burnishers, handmade sanding sticks, very fine abrasives stones and fine rubber abrasive sticks and small wheels... not gonna be easy - but can be done... usually...
No image of the damage?