Hey man,
Long time lurker on this forum, and I have had many experiences with GM/unauthorized kicks thinking they were real, and personally, I own a pair of unauthorized Cav 4's, and the tounge is fat and thick.. much like the picture you have of the toros, and the black lining goes to far over the tounge.. That's my two cents.
I would be skeptical... because the box does not have a sticker of any authorized retailer either i.e. eastbay, champs, etc. From my experiences with gm 4's i am almost certain these are a GM pair, box is a little beat from the shipping, and no authorized retailer sticker; along with the tounge shape.
I'd be careful with this pair, personally, I would stay away, but apparently a lot of people think it's legit.