Going back to electrical talk, with two headphones having exactly the same sensitivity given the same voltage electrical signal, but one is 16 ohm and the other is 32 ohm and I=E/R and P=EI, so the power is inversely proprotional to impedance given the same voltage..
It is quite possible that the hypothetical high impedance headphone winds up more sensative than the low impedance one!
|If you mate a semi engine with a Ferrari drive train, the engine still maxes out at 2,500RPM with a boat load of torque to spare, but you won't be delivering 500hp|
You would probably be correct to say that the engine wont move the car particularly far though. It would more than likely destroy the clutch and gears of the immaginary Ferrari drive train which are not likely designed to handle this much torque. The likely scenario is that you are running the transmission on the hopes that the safety factors hold up...