well if thats just the magnetic collar and pickup style
you get you points based curve
with a different type of switch, it will indeed have a different switching speed. points do suffer from arching....
any variance at high RPM will probably be mechanical... vibration in the drive due to crank/cam flex or flapping timing chain. how much or little impact that has dunno.
distributor machine will be a nice environment, to work in, But with your distributor drive stuck into a motor, its not a nice environment what you see in test situation and what you get in real life could differ
With the basic petronix you are limited to a coil with a ballast resistor you are limited to approx 3 amps in the primary
is there enough time to "charge Up" that coil at a "points based" 3 amps to make a decent spark at that 11,000 RPM :)
probably not, 6000 yeah, 11000 not so sure. A spark at atmospheric pressure and just damp air, ain't necessarily a spark in a combustion chamber at 11:1. You'd have to rip the electrons off 11 times more molecules of air and fuel to get the spark to propagate across the gap. potentially 11 times harder than with a spark plug earthed to a testing rig....(although i bet its not a linear relationship, i dunno)