Wow, hora's struggling with a simple concept here.
Winter tyres give MORE traction than summer tyres - fact.
Therefore, you can either go faster for the same level of control, or go the same speed and have lots more control. Or, what most people do, go somewhat faster and still have more control.
You seem really keen to twist these very simple concepts into some kind of position where you can make us all out to be stupid. I don't really know why.
Its all very well saying "I don't need winter tyres, I know how to drive my car well".
I'm also pretty good at ice-skating, but I won't be putting on a pair of football boots next time I go.