Aircraft only auto trims to 1G when the flap switch is set to auto. With Gear and Flaps down it's more trying to nullify pitch rate instead of targetting a specific G load.
And you are correct. Airspeed should be the last thing you look at when getting the jet on speed. The VV and the E-Bracket are the most important, while airspeed is almost entirely dependent on your gross weight.
Muchocracker's post in Yet another carrier landing thread. Sorry. Onspeed. AP disconnect. was marked as the answer