I have Nokians on all four wheels of an Infiniti Q45 (1991) without traction control, and on all four wheels of my 2003 GMC 4x4 Duramax crew cab. They are marvelous winter tires. Very popular in northern New England.
I live near the top of a hill 1300 feet above the valley below. The first 1.5 miles up is paved, the last 1.3 miles is not paved. I have not had any problem getting back "up the hill" with either vehicle this last winter. At the end of the 2003/2004 winter, I changed back to the "summer" Firestone Steeltex A/T tires a little too early, and another snowstorm came. The difference in traction and control between the Nokians and the A/T Firestones was most noticeable. The hill that I almost always was able to take in 2WD was not climbable with the Firestones until I switched to 4WD, and even then I was not getting full bite.
I know nothing about the Winterforce tires. Blizzaks start out great (we have a set of them on an Infiniti FX45, for which we could not find a suitable Nokian size) but as they wear, they become an all season tire.