If you bought your copy pre-owned from GAME, as you mentioned in one of your comments, then it's a legitimate copy. Stores that sell pre-owned games almost always check them over and test them before selling, which is why they're a much safer option to buy games than from eBay or Amazon. In terms of the game box and cartridge, both are good quality. None of the text is blurry, all the correct information is there, and the cartridge is properly put together. The only damage appears to be the scratches on the back of the box and the cartridge, which won't affect the game at all and are pretty normal for pre-owned games.
I recommend this video to help identify if a game is fake or not.
Hope I helped!