The CC2 can't even handle the dry. 2 wheels spinning on "road rage" (Sport) mode on my Hybrid, and that's on the dry asphalt... imagine needing to do a quick merge into heavy traffic, and the CC2 loses grip that easily.
To bust a multiple point U-turn through this heavy wet snow... it's easy to get 3 wheels spinning, with low throttle (on Eco mode, which I normally drive). The CC2 don't exactly inspire confidence in the winter in conditions other than after the plows come through (that's where these tires excel, and the video reviews demonstrate that). It's not an isolated incident either. Happened at Mammoth last year (fresh tires), after the blizzard and getting my car out of the condo parking space into a cleared space, since the plows push a berm on you, then at Brighton leaving the parking area (had to put Trail mode on) to get to the road and back into its natural habitat, plowed roads.
Plus the fact that the siping pattern is different when you get to 8/32" tread, where it resembles the original CrossClimate tells you it doesn't have full depth sipes. You no longer have the stepped pattern siping in the center of the tread, and part of the shoulder siping is worn away flat.
The whole point of having a AWD SUV in CA is not to put on chains/cables in a R2 condition. So, if I have to drive through a blizzard, I might have to kneel down and put cables on. The only time the Nokian WR G4 SUV performed worse than the CC2, was when it was hovering around the WSI mark (snowflake indicator)
Nearly worn for snow by
thisistan, on Flickr