Yes, both the font and the size.
I used WASDKeyboards to "convert" a French AZERTY board to QWERTY. In natural light, you can see that the laser engraving is slightly brighter then the stock Filco one. Under a strong light, you can see that the plastic is quite different too, but I don't notice under normal use.
In the photo, QWEAZ\ are from WASD, the other letters are from the stock Filco.