I'm surprised by the results, although I note he comments that it could be the A/S Continentals are a new design and perhaps different than your normal A/S tires. That said, he cautions that these results were obtained on a dry track and if you added snow/ice on the road surface, the winter tires would be far superior.
Still, they tested these tires at -5 degrees celsius and he confirms that the rubber compound on an A/S tire usually starts to be a problem around +7 degrees celsius and colder. I wonder if their continued use of the A/S (warming up the rubber) may have been a factor which contributed to these results. Otherwise said, if you were to drive a short distance with these same A/S Continentals at -5 degrees celsius and before the rubber compound heated up, you may be in trouble when trying to swerve around something or stop quickly (?).
I've spent too much time dealing with motor vehicle accidents with my job, plus it can get REALLY COLD where I live (-25 to -40 Celsius at times), so I'll stick with my habit of always putting winter grips on, once it starts getting colder. That's just me.
I'll ask
Blackthought_ consider updating this thread with his experience, once he's driven a winter on these DWS 06 Continentals.