Don't know about your winters, but both tire options are completely unable to cope with winter conditions. The Cup 2s aren't even working in the rain. I regularly see Porsche GT3s on the Autobahn driving 60 kp/h in the rain while some of the normal cars are still driving at speeds north of 200 kp/h. The Goodyears have no problem with rain, but if it get's cold, slippery or even snowy, then you are completely done and should better park your car.
So the only difference between the tires is rain? I am still interested in the temperature rating for the Goodyears.