While it's possible that some keychains that were made for the Factory stores may have had some corners cut during manufacture, the top keychain in both of those photo sets just doesn't look right.
The brass Padlock KF 93079 at the top seems to have blurry-looking stamping on the
Coach logos, both on the Heart Lock charm and the small hangtag. The color also looks too brassy but that may just be the lighting or the camera settings. The blurry logos could also be the way the light is hitting the lettering, but the hangtag isn't quite the same as the genuine one in the second photo. I'm not sure if it's fake but I wouldn't buy it. Coach's pic is posted below, although the production version often isn't exactly the same as the pre=production photograph.
The purple Girlie Mix 61895 shows more obvious differences, especially the color and uneven surface of the enameled hangtag. The links in the chain also look thinner on the top one, and more oval than they do on the one in the second photo. Again, without knowing if a less carefully-made version was released for the Outlets I wouldn't be comfortable reporting it as fake, but I wouldn't buy it either. This one is more likely a fake than the first one though, that hangtag doesn't look right. Coach's pic is below.