I have had both, and the KO2 are fine on snow, horrible on ice. Scary incident in icy storm where my wife almost slid off a road w her 4runner which I have mentioned in many of these threads. Lots of cars, were making it past her. I was able to drive to her with General Grabbers on my 4Runner at the time and pull her to safety. Even airing down I couldn't get traction with the KO2s to get her car home, trying traction control, 4L, etc. A nearby homeowner was nice enough to let us leave it in their driveway. We made it home fine with my rig with the Grabbers, although it was sketchy. Her tires were C rated KO2s tires and the incident scared my wife to the point she only runs dedicated snow tires on her vehicle in winter. I run studs on one rig that I take often on 5 hour mountain roads to ski in Canada, ID, WA and MT, but keep Falkens on all of my others as they do great in winter.
Snow traction need snow on snow contact (snow in treads). ATs tend to do decently well with this as long as they are flexible enough to let snow get into the siping. Ice requires soft compound, which is why KO2s suck on ice.
www.popsci.com/story/technology/winter-tire-driving-guide/
"You’ve likely experienced this when packing a snowball or rolling a snowman. Once packed, the snowballs tend to remain pretty sturdy.
Here again, the rubber compound is important, because the tread blocks need to remain flexible at very low temperatures so they can better grab snow. “We like that pattern to open up and trap snow,” Coke explained. “It is important blocks aren’t rigid or they don’t open up and give you that snow to snow grip.”".
KO2s have a strong, stiff rubber that last a long time. Great for most anything BUT ice. I'd hate to hit black ice with them. They also aren't awesome in heavy rain as they are prone to hydroplaning. They are probably the best AT for offroading though, and longevity.
I have had Falkens on ice and they do well for an AT.
The problem is the tire industry lets the 3 peak snowflake designation go on pretty much any modern tire that a manufacturer tests because it only has to perform better than a summer radial. It is a disservice to the consumer.
It would be akin to saying every AWD and 4WD is certified to go offroad because they can all do better than a Geo Metro. Sure, they'll do better, but a Highlander won't do nearly as well as a Land Cruiser.
Consumers and the tire industry should demand that the test provide a rating based on actual snow and ice performance so consumers can have information to make intelligent decisions rather than consumer reviews or people on message boards that have one tire say they do fine in x conditions when they have no real baseline of comparison. Maybe a snowflake system with a 1-10 rating where 1 meets the minimum snowflake rating up to 10 where I assume only the best dedicated winters get 8-10 ratings. Perhaps even bifurcate snow and ice performance where snow is under 1-10 and ice is rated as A-J, so a 10J would be the ultimate in winter traction.