No not really. It is a series circuit. So the 12V feed thru ballast to the + of coil and then into the ECU through the power transistor which as the other end of the transistor on chassis ground. If the transistor stays open, you measure 12V on the coil positive and negative with no current flow. Once the transistor conducts to ground you know have series circuit with 12V through .5ohm ballast, 1.9 ohm coil, .7V drop across transistor, any unknown inductor, capacitor, or resistor in the path to ground. That will then determine current flowing in circuit. So raise the ballast resistance, or increase the transistor drop and that reduces current to coil which means longer to charge based on RPM and dwell.

With a points you have 12V through .5 ohms ballast, 1.9 ohms coil, and we assume 0 voltage drop across points. In reality you can have voltage drop due to contact resistance at the ignition switch, bulk head connector, points, and any other connection terminal due to corrosion, or tarnish, etc...