Yes, but it's also a lot softer and studs will dig easier in warm ice. Furthermore in colder weather rubber is harder and will be less pliable than in warmer weather. Nothing unexpected about that. What was your point?
Studs are designed to poke thru and grate the ice on which they ride. With softer ice, they poke thru more, and tend to have more grip in turns because of it. With harder ice, the studs don't poke thru as much, so the acceleration and cornering will be less. Let's not forget, that a studded tire may expose maybe 6-8 studs max to the contact patch at any given time. Which means they will have a large variance of performance for conditions present.
A dedicated ice tire on the other hand, is designed to have a much larger area of exposure for a given contact patch. Silica based tire compounds are very pliable down to some pretty low temps. At temps in the -20 ambient at Steamboat for example, you could stick your fingernail into the gummy bear tread section and understand that "less pliable" may apply to a non ice tire compound comparison.
Having driven on both studded and non studded tires, I agree with Idoug that for 95% of winter driving, a non studded ice tire will outperform a studded tire. As TC found out too, studded tires have a very narrow window where they may outperform a non studded ice tire.
Personal preference can be debated ad-infinitum, but the documentation regarding real world (on road) winter performance doesn't support a studded tire being a better winter tire than a non, only better at a specific winter condition. The other 95% of the time, the studs just come up short.
After a couple hundred miles of ice track driving on the Blizzacks with my 80, the level of winter performance is so high with the Blizzacks on our machines, I see the comparos as kinda silly. IMO/E an 80 with Blizzacks most dangerous winter condition, is the drivers of the other vehicles.
My further .02
Scott J
94 FZJ80 Supercharged mit Blizzacks