Trade off is usually harder (or less-hard with more tread depth) = longer life whereas softer = better traction.Being no tire expert, may I ask, if the tire runs LONGER, does that mean it's a harder compound? And if so, might that be not so good for plyability and traction? If it's not a harder compound and is of NORMAL plyability and texture, then I can see the reasoning for the price, if the mileage is increased on these tires.
MOTOZ tyres and the Tractionator series are popular on the left coast of Canada. Good traction, lots of tread depth and reasonable life.
That said, we have shale rock FSRs where you can destroy a tyre in <1,000km where that same tyre on pavement and easy gravel FRSs will last you 7,000+km or more. A friend on 2016 AT who rides aggressively on pavement and easy gravel got 22Kkm out of Mitas E07 rear.
When you are sliding sideways in mud you wish you'd bought the knobbier knob. When you are half way to Alaska or Baja on pavement and your knob is bald you wish you'd bought the K60 with centre strip rubber. When it's a cold December rainy day or you are looking for traction on wet grass or mud you swear a blue streak at the K60 that was great all summer on dry pavement and dry gravel. Tractionators seem to give confidence to many riders in a lot of situations - and last quite a while. Mitas E07s do the same for other riders.
For me, I'm more concerned about traction on and off-road than how many km I can get out of a tyre. TKC80 or Mitas E10 lasts 12Kkm on the front. TKC80, Mitas E10, Mitas E07+ lasts 5-6Kkm on the rear.
At 32Kkm I'm on my 6th rear tyre...