Here is a quick chart I got, might not be 100% but for what I want to explain its fine :P
As you can see, ScratchX 2.0 is a 8/12 on the aggressiveness chart. It can remove scratches,oxidation,body contaminants..ect but More or less this product was to be used by hand, and you can use it with a DA.
If you have the original ScratchX I would say forget about using it lol.
If you are going to use a DA, I would recommend Ultimate Compound or SwirlX, these are meant for a DA and you will be getting alot more polish/compound for a bit less $. You can also apply these by hand.
Post pics of the scratch!