I assume what you are trying to get at is that the "data affecting the version store" is the data changed in the source table that causes data to be inserted into the version store, not the actual data inserted into the version store. And I can see how you could interpret that statement to mean that.

The data added to the version store is never logged in tempdb, but the source of it is logged in the source database. (Just like it would be if row versioning wasn't being used.)

Is that what you are trying to point out?