That is NOT my quote at all?, You seem to have an obsession with winter tyres, a suitable case for treatment.
Winter tires are probably a dull topic to be obsessed with. Grip and how mechanical systems actually work on the other hand is quite interesting I have to admit. I am not judging your choice to ignore all of that, physics and engineering are not for everyone after all even though traction and grip should be pretty "grasp-able" topics for anyone spending time on a car forum.
The Golf AWD v 2WD on same tyres is superior in those conditions and you know it. End of, winter tyres is another topic. Obviously, you, in particular, need them, most of us don't, sorry about that.
You couldn't be more far away from the truth actually. You have the typical AWD over-confidence merely because you don't know how the AWD system in your car works and what it can and can't do. If you knew you would realise that even though setting off is easier/better, there are no benefits during cornering or braking compared to a 2WD car on an snowy or icy road. Try to find a driving course for AWD cars or poor conditions in general. VW hosts them in some countries. Maybe if you hear it from a qualified instructor you will be able to accept it or even understand it...
PS. We've had a RAV4 with proper AWD in the family for years. Great car and all but the only time we ever got close to crashing badly was when going down an icy hill in summer tires because my father, unfortunately shared the same sort of AWD ignorance and believed it just improves everything on the car, cures the sick and what not...
PS2. This is hardly about defending/attacking choices, I hope you are not confused. The Golf R is a great car and it would have been my choice (was the first car I test-drove) if the CS did not appeal more for my own needs and like so I clearly have nothing against it. But as with any car, it is useful to know the actual capabilities and inherent weaknesses and try to stop old myths and misconceptions perpetually circulate.
Hopefully we could get back on topic after this parenthesis.