ready for a better hitch...B&W or Anderson Ultimate

A couple of questions:

Some said the Andersen sits back farther than a standard fifth wheel hitch, but wouldn't that put it behind the axle? How much farther back

Is anyone here who has an Andersen hitch using it on a short bed?

I have a 6'4" bed. I know it depends on the shape of the front of your fifth wheel, but is there a greater chance the front cap of the 5th will clear the cab with an Andersen than with a standard fifth wheel non-slider hitch?