You can quote Parkers all day long if you like, to demonstrate that you can pay 17.4% more for what is basically the identical car, for the benefit it costing 4.7% more in depreciation, according to some very carefully selective figures.
And that's without taking into account stuff like the fact that discounts are much more likely on the VW, the fact that Parkers figures are often way out, and comparatively aren't neccessarily always accurate, for example when a model is superceded.
But if you will insist on using Parkers' prices as some sort of bible, then it's awfully convenient that you've picked the pair of figures that result in the smallest difference in depreciation figures.
You based yours on "Private - good" prices, which gave the smallest difference.
Here's the scores for the other sections:
Franchised dealer: Audi=7075, VW=6440 Independent dealer: Audi=7380, VW=6860 Private - poor: Audi=9915, VW=9035 Part-ex: Audi=9105, VW=8030
So in all cases the Audi actually depreciates *more*, either by £520, £635, £880 or £1075, depending on which set of figures you're going on.
Sorry, your point was?
-- "For want of the price of tea and a slice, the old man died."