bomarc:
I don't know the A380's flight control system. However, if the rudder control system is anything like the 747-400's, the autopilot controls the rudder when coupled to the ILS. Also, the yaw damper acts as a turn coordinator as well at low speeds, so it may respond to stick inputs as well.
I haven't seen any close-ups of the A380 on approach, so I can't do any more than take a reasonable guess.
rainboe:
The 747-400 has automatic N1 synchronization, so there is no need to line up the thrust levers, as long as they're within a half knob of each other.
The 747 Classic is a whole 'nother story, though! You can get significant yaw if the N1s are not matched! If the thrust levers are not rigged correctly, there can be several inches between them when N1s match.