Coming from Continental ExtremeWinterContact's, the Blizzaks are more comfortable, steadier, and more predictable. My old Conti's actually had better take-off grip than the WS70's and had better dry weather grip and dynamics, but rode harsher, made the rear end squirrely, and were less predictable in breakaway events under all conditions. The Blizzaks are better in wet weather versus the Conti's and light years ahead in slushy conditions. I have not been stuck with them on during the winter of 2014, where we have received over 100 of snow. The only thing holding them back would be my car's ride height and lack of all wheel drive.
The only thing I would the WS70's to be better is in absolute grip (acceleration, brake, corning) but only if the predictability and stability were not compromised. Better to have a tire with lower limits that doesn't scare you than one with higher limits that does.