All those 100k, 60k, bazillion mile tests are useless. None are even close to a soccer moms driving habits. I can hop into almost ANY car and drive 60k miles non-stop, with normal maintenance and fill ups, and come to the same conclusion on just about ANY car. It took my wife 12 years to go 100k miles with 99% city driving and no engine can survive her too numerous to count short tripping and lukewarm restarts.
So, I could care less what some taxi cab fleet, automaker, or magazine does with their drive around testing. They could hire the wife but it would take a decade to get real data, but if I look the other way, about 3 years for her to sludge ANY engine. And yes, she has no problem trashing every engine she ever has owned into a rattling nightmare full of sludge/varnish/crud with every known engine problem that is common to her driving style type. I sometimes let her do dealer only maintenance, with reminders when I get tired of maintaining her vehicles.
Some of us don't drive for a magazine for a living. Some of us actually commute..... and 60k miles is a nuthinburga. Have autobild post back in 250k miles or 400k km, or limit all trips while testing to less than 5 miles, with a cooldown, prior to proceeding, without ever letting the engine fully warm up. Yeah, that might impress me.
I don't have a problem with 508 oils. I do believe some driving styles with destroy it. And, until the 508 oils have been used for a decade, I could care less about automaker R&D or silly 60k mile magazine oil test, which is nothing when my driveway has a fleet with 700k miles of driving on it.
My 508 equipped VW is the youngest and lowest mileage vehicle in the driveway, and to avoid unknown misengineering issues with VAG, is on a 5000 miles oil/filter change interval.
Ask me in about 8.5 years what I think about the 1.4T and its diet of 508. I'll give you a real opinion on how well VW did with this oil, on a car with multiple drivers, real driving commutes/trips, including women drivers and teenagers.