AC120-40C won't give aircraft system hardware delay times; it gives simulation delay acceptable levels.
It's actually possible for a simulator to be faster than an aircraft in terms of delays, depending upon the characteristics of the prototype and the simulator.
In terms of control surface motions - assuming you aren't hitting hinge moment limiting of any significance, a good rule of thumb would be to assume that the controls will move stop-to-stop in one second, and take that as the rate limit for the controls. That's only for primary flight controls. Secondary controls - like a trimming stab, flap, etc - will be significantly slower; stab rates typically of the order of 1 deg/sec, flaps maybe 2 or 3 deg/sec.
One of the factors that makes a big airliner feel more sluggish is the control forces; by regulation you're required to have deterrent levels of stick force at the limit load factor - say 50lbf pull at 2.5'g', which equates to about 30lbf/'g' in terms of stick force per 'g'. Fighter type aircraft will have values almost an order of magnitude lower, since their limit load factor is MUCH higher. Thus an airliner will always 'feel' heavy. You could make a fighter 'feel' heavy just by changing the feel force characteristics.