All I can give you on the traction is what Goodyear publishes on a scale of 1-10.
And even though they write my paycheques, I wouldn't put too much stock in that 1-10 scale. lol
You can't beat real world experience from real world owners on that sort of thing. In your travels you might stop at truck stops from time to time? Take a look around in the parking lot and see what guys are running on the big rigs.
Chances are if you see a lot of one or two types of tires, those are the ones that are lasting the longest and giving the best traction in that particular area.
Big rigs tend to run specific tires for specific areas/conditions, and when you are replacing 8 drive tires at a time for big $$$$$$ you tend to choose your tires very carefully.
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)