Ok, a thought just popped in my mind. As we know, the Supercharger is 12 of the 10kW chargers that are onboard your car. Tesla gets 120kW because they have 4 of the 10kW chargers on each of three 277 volts circuits (480 volt three phase). If those chargers individually pulled 40 amps at 250 volts, that makes 10kW. But, I know from private testing that the charger will back off the amperage above 250 volts, to around 36 amps at 277 volts to stay at 10kW. So, my theory is that Tesla keeps the same physical architecture and bumps the amperage to 40 amps at 277 volts = 11.08kW per charger multiplied by 12 equals 132.96kW.