Wisconsin used at least four basic systems. Remote/stand-alone magneto-breaker-point with an impulse-spring for starting, flywheel magneto with breaker-points, capacitive-discharge breakerless flywheel magneto with separate remote mount coil, and battery-coil ignition.
Battery coil ignition offers the most spark energy when needed. Up to 40,000 volts. All the others max at half-that at around 20,000 volts.
Many old engines did start hard from vapor lock - but many also had starting problems due to bad points, dead condensor, broken impulse, and/or weak magnets in the magneto.