PVL ignition is digital, not analog. Magneto ignition is analog.
Analog or Magneto ignition will retard spark at high RPMs, that is why timing is advanced at idle, so that at high RPMs the spark will not be retarded.
PVL or digital ignition will not retard at high RPMs so the spark advance at idle and at high RPM operation is exactly the same.
Also PVL will give a rev limiter where magneto does not. Magneto spark at the high RPMs is also inconsistent, at least compared to PVL.
Here is a graph that shows it better than I am probably explaining it. lol
PVLTIMINGCURVE