Using the same lowest amount of power - yes, but that's moving the goalpost. You're not interested in power consumption that much if you're optimizing for maxim

Using the same lowest amount of power - yes, but that's moving the goalpost. You're not interested in power consumption that much if you're optimizing for maximum performance. Using the same highest amount of power - absolutely not, unless you could overclock Apple processor and prove that. Some things just does not scale, if you try to feed 100 amps @ 1.5v to an ARM CPU and run it on 6 GHz, it'll burn out.