Audi pretty much invented 4wd for mainstream cars, pushed forced induction when it was shunned by almost all other manufacturers for production vehicles and is one of the body successful rallying brands of all time if not the most. It DOES have pedigree along with those other characteristics mentioned.
The first brand with 4WD in a mass produced car for the street was Subaru, not Audi. Audi's first mass produced 4WD system for the road came 8 years after Subaru! And Subaru has been a major force in rally sport too. Yet if Subaru was about to release an R8 or NSX type car I doubt we would we hear anyone babbling "I'm going with the Subaru cause it's got pedigree."
Regardless you're missing my point which was why does Audi have "pedigree" but Honda allegedly doesn't? Not only has Honda been involved in racing for a long time, but they have more technology firsts than Audi. What you're really talking about is "prestige"-- i.e. my peers will be more impressed to learn I bought an Audi R8 than they will the new NSX.
There's a reason brands like Honda have had a cautious attitude towards forced induction-- it tends to reduce a car's reliability. It's apparent that German brands such as Audi are more willing add a turbo charger and other technologies onto a car without performing the same level of long term quality engineering that goes into the typical Honda product. I truly believe this is a design philosophy difference and not one of superior technology. This is why the value of Audi cars typically drop like a rock once the warranty period is over.
Check out the long term reliability rating for the Audi RS6. Being from their Quattro division it's the closest thing I could find to the R8. Elsewhere on their site they say the Audi RS6 is the absolute least reliable car of all those sold in the UK....
http://www.reliabilityindex.com/reliability/search/23
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