two cars ...
Actually, in cars:
Power is power.
Gain is how hard you have to press the go-pedal.
I have an old truck with bad throttle leverage, gummy throttle cable, too stiff spring on the throttle, a wad of carpet under the pedal: "low gain", I have to push real hard to get anything.
That throttle could be a 45HP econo-engine or a 870HP turbo-Hellcat: power is not related to gain. (Unless the gain is so poor that my foot can't command all the power available.)
I had a car with very easy pedal but not much power. I could control it from zero to 90HP with one toe. Pushing whole-foot still only got 90HP.
Power costs MONEY. (That same car with a 200HP engine was $500 more.) Gain is sometimes cheap. (In chips, "infinite gain" may be on tap and a resistor choice sets a useful gain.)
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