My initial Google search didn't reveal much about the Cooper Evolution series. It appears to be designed for a price point below the Discovery series (STT Pro, ST/Maxx, AT3). As such, the Evolution MT probably has 2-ply sidewalls rather than 3 ply, lack of "Armor Tec 3" construction, no rim guards, etc. as would be expected with a lower tier tire. That doesn't mean they are a bad tire, just that there are trade offs for a lower price point. I would think that the Evolution would be competitive with Maxxis Bighorn MT's and similar tires at that point of the tire spectrum.
I am looking forward to learning more about these. I currently run Cooper Discoverer AT3 tires on one of my vehicles, which replaced a set of ST/Maxx, and I run Mickey Thompson's Baja ATZ P3's (a Cooper tire) on my Jeep.