to bad those tires look way weirs than the stocker jk tires (at least for the rubis) and the back bumper makes it look like it has a bad body lift.
Well, they aren't testing the tires so they aren't going to put Rubi tires or wheels on them. Not to mention, this is a Military application and will most liekly use steel wheels and probably some standardized tires (ie. small tires)
The issue with the rear bumper is because it's a black JK. Look at the green one. There is no gap between the top of the frame and the body. The gap you are seeing is because the bumper sits away from the frame and the end of the body. I kinda like that C channel rear bumper. Looks pretty tough.