electronics don't need to be confusing. more gas/electric car analogies:
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This is the power demand or output of something.
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electrical power is measured in W. e-power is basically the product of current and voltage (power = current * voltage). the W is analogous to a gas engine horsepower rating.
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the mA is more like the mpg of a car.
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the mA is analogous to fuel consumption rate (gph). gas mileage (mpg) translated to electric r/c would be miles per mAh.
launching off the line, or any other heavy acceleration at low speed, produces a very large current (mA) draw compared to running full speed. a single cell mosfet cars launches harder than a dual cell transistor car, because at high currents a regular transistor's high resistance absorbs significantly more voltage while the mosfet allows the motor to use all of the battery's voltage regardless of the current. however at top speeds, the extra voltage from the second cell overcomes the voltage difference and the dual cell transistor car pull away.