The main thing to look for is the label.
The unauthorised and some straight out fakes have must of the font in BOLD.
Also FAKES don't even use the correct material.
Whilst the one in your picture is correct.
These are not even GMs. Just clear fakes.
Check the top triangular area of the tongue of the white 6s and you'll see the stitching is in a square.
For the black 6s. You can just tell they are fake, the material even with a flash will have a more 'fury' look to it. All nasty looking.
The Jordan 6s are going to be on point, but as we know with Nike they will drop quality here and we shouldn't expect such a strong structure as previous models.