I would think the Kevlar MTR's are a better tire, but they are more expensive and aren't offered in my preferred size of 33x10.5. Kevlar sidewall, would hold up better in the rocks and hybrid tread design would perform better on the road and varied off.
That stated, I just got a brand new set of KM2s and I am so impressed! Awesome in the snow, mud and asphalt! I haven't tried them on dry dirt yet, Oregon's wet. I don't have any complaints for the KM2s. I will buy again unless Goodyear adds the 33x10.5 size in their product line up. KM2s should give 50k tread life, which is nice for my daily driven Jeep