Borderlands. In Borderlands, most things are trying to kill you. In Avatar, most things are trying to kill you, with a higher population density, and the threats are a little more subtle (like the air). Being barren has its advantages. Borderlands, you can hardly walk 3 feet without tripping over some weaponry. In Avatar, you are constantly under the thumb of a major corporation limiting your access to weaponry, unless your killing the locals for immoral reasons. Basically, Avatar is prettier, but Borderlands is a tad safer, more predictable, and has more freedom.