Well, I would think that the court would like to see buybacks speedily completed as soon as all documentation is found to be satisfactory and approved. And the less complex the review, and the fewer the documents, on a de facto basis, simple transactions without liens could be reviewed and completed in fewer days. Third party financing firms have no real stake in the speed of the transaction, and some might take their time in giving a lien release, for example.
So it would not be surprising to see cars without liens approved and scheduled more quickly than cars with liens, not because of VW favoritism, but just because getting all the paper work in order on a car with a lien could take more time.