Well, yeah… but Line Width, Layer Height and speed are functions limited by nozzle size.

You can’t make a 0.60 layer height with a 0.4 nozzle, but you can with the 0.8 nozzle.

Speed is a function of nozzle size, because you can’t push 200mm/s worth of plastic through a 0.1 nozzle.

Pushing too much mass through a small nozzle creates uncontrollable back pressure.

With a large back pressure, your ability to control flow rate and die swell because too much.