How fast would this charge a RAV, as compared to a 6-kW L2?
It depends how many amps a Tesla charging station and set for. They are capable of 12 through 80 amp settings.
Assuming a charge station is capable of 40 A or greater, then your RAV4 will charge at 40 amps. (208 volt * 40 amps = 8.3kW)
Public J1772 charge stations are generally restricted to 30 amps worldwide (208 volt * 30 amps = 6.2kW)
Most commercial power in the US is 120 volt / 208 volt, while most residential power is 120 volt / 240 volt.