they should call it the specialized "fairclaw" sounds like fairclough and he gets a nice tribute to what he is doing for specialized and dh racing that is if it isnt a demo anyways.
the length of your bike could be that difference too ya know... you could say anything and the best thing to do is just not worry about it so much because you will never have a bike you are happy with
heavy doesn't turn, and light "floats" over all the rocks and what have you also light turns better and is more nibble, so actually you have to be happily in the middle somewhere depending on the track and the conditions.
The bearings allow the spring to function properly. When a spring is compressed it naturally wants to rotate, the bearing system allows this to happen preventing binding and buckling.