I also wondered about them being fakes myself, since I ordered this particular pack on Amazon. However, they have excellent reviews and it would be very difficult to fake feathers with all of the packaging and etching on the blades. It's definitely an issue of them being dull because they tug, which only dull blades do. I have tried them over and over again, and was quite surprised.Could they be fakes? Feathers are objectively the sharpest the blades out there (according to the testing at refinedshave.com) and personally I have been through 100s of them without ever getting a dud - the Japanese QC is excellent.
They aren't the smoothest blades out there - maybe that lack of smoothness is what you experience as dullness. I think the same thing happens to me with some blades. Also, they lose their edge quickly - a very fine edge isn't so resistant to deformations as an edge that isn't so sharp to begin with.
I am a head and face shaver so I let everything grow out for two weeks when I went on a fishing trip this summer. When I got back I tried the Feathers again, and got the painful/uncomfortable tugging. I switched out for one of my favorite blades for the face shave, my Gillette Platinum. It was like a hot knife through butter, there was no resistance or tugging at all. The razor I used was my Henson Ti22 +++
For my head I used a new feather blade from another tuck and I got the same result. So I immediately replaced that blade with a Perma Sharp, another one of my favorite blades. Again, it was like hot knife through butter and very smooth. I used the Karve Overlander. So I gave the Feathers every chance, so it made me wonder if the whole sleeve was bad.
The Overlander and Henson razors are my favorite and most used razors, so I am very familiar with them. I am going to ask a friend of mine for one of his feathers next. I want to eliminate getting a bad sleeve.