My anecdotal experience, but I've got about 5,000 miles on harsh desert rocks with my 265P rated AT3W's, and I've had zero issues, although I air down to 20psi (no issues with the tires handling it) it just wraps around anything. I'd imagine tire pressure has a big part to play in that.
Not to mention I got DiscountTire to price match amazon at $123 a tire. Really can't beat the bang for buck, and they seem to do great compared to the K02's in rain.