the fingers are the same. look closely, they are bent, that's why they look shorter. it has one nail in each finger. it's the alien forearm with the aliens hands.
also, i don't know what the f**k is going on with the xenomorph's hip. it's tilted sideways? is it the leg bone? where the hell does the right leg start? what is that shiny "ring" on it? my brain is full of f**k.
apart from that the model is spot on and i'm liking it so far. the only things that stand out are the back tubes, they are too high in the back and too straight, but it looks like it was done for the sake of head mobility.