It is poor in the respect that it is very slow reacting to airspeed changes
That's due in part to being common with the 767 A/T, which had to deal with the JT9D. The JT9D-7R4 on the 767 was prone to surge/stall with rapid throttle movements at altitude. Although they made engine changes to address this, they also slowed down the A/T rate at cruise.