Here's another way you can tell the difference
In Crysis, Crysis 1 MP and Crysis Warhead, the NK and USA nanosuits look monotone/washed out/grayer, while in Wars, the suit colors have more contrast/brightness/colors
Crysis Warhead:

Wars:

I know the Crysis Warhead example isn't the best because they're covered in ice, but if you look for this difference in the videos you'll see it as well.
Here another vid with a great animation at 0:27, where an enemy wall jumps up the energy site and pulls out his gun...., and another great animation at 2:25 of a great strafe jump and fight combo in the proto garage. none of this in Wars.