Mine is more metering options (to get all the channel meters to be able to behave like VU meters with -18 dbfs as 0db).
And a project information text export.
(P.S.: I know you can futz with the meter appearance via preferences but it wold be nice if it could match the options of Logic)
So what is the advantage of the scratch pad against Cubase‘s track versions? The scratch pad is just a section at the end of a song, to test some ideas. You must copy the parts into place if you want to use them, right? With track version you can create as much new sections as you want right in place!
In my experience from using both, the Scratch Pad is just a lot easier to pull up in the middle of working, throw extra bits in there, and then recall them when you want to use them. On a functional level you can do this in Track Versions (and I do), but Scratch Pad is designed with speed and convenience in mind, and they really feel like two distinct features with different purposes when you use them.