Yeah, and I should've approached this more as a question. How do you tell? I know about flap wear to see if it's been open, but if it's a fake box, there probably wouldn't be any. This game in particular is just so easy to fake. I'm sure they can get detailed looks at color bleeding, etc.
Also, I get it's a double edged sword spreading info about verification techniques. Not like I can drop 40 g on a game anyways, but I've been hunting a CIB of this for some time and it's frustrating.