AKL does have travelators on B pier, although they only cover a modest portion of the walk. While the distance is far at least you aren't doubling back and back again on yourself - there is a long straight-line distance between EK check in and the B pier gates.
SYD doesn't have that excuse.
FRA has airtrain & the tunnel. It is big and confusing yes, but there aren't long distances to walk.