The 4wd one is longer and is routed differently to the 2wd.
If the ratchet has taken up all the cable, but the pedal/bite point is ok I wouldn't worry, no it shouldn't be like this, a way around it is to cut a small section out of a 8mm nut, then slip over cable inner so it is wedged between the rear of the fork and the cable nipple end, this will effectively lengthen the cable, to ease the adjustment lift the pedal and push the adjuster towards the bulkhead, few presses and it will re adjust.
tabetha