This is not entirely true.
The PWM current limit % is actually the inverse of the current limit. It really should be called "PWM Current", with the limit being removed. At 100%, the current is not limited, and this is the correct setting for low Z injectors with series resistors installed. At 30%, the current is being limited 70% by the PWM circuit (or 30% of the current is being allowed, depending on how you like to look at it). None of the PWM settings have anything to do with injector duty cycle. This is entirely controlled by the required fuel variable, your VE table, and engine load/RPM.
datman, your settings are fine. The PWM circuit only allows 30% of the current to flow through your injectors. The PWM circuit protects both the drivers and the injectors.