That is not the right question. I agree with
@mrjdstewart, I doubt there is any difference in the “power,” that is watts. Both will likely draw the same wattage.
The right question is at what airspeed will the power be delivered. The lower Kv motor will work on a lower pitch larger diameter prop. It will produce more thrust but at a slower airspeed. The higher Kv motor will want a higher pitch smaller diameter prop. The thrust will be lower but the plane will fly faster.
Think transmission, low gear will have more lugging power but a lower top speed. High gear will not pull as much but will produce more speed. Both high and low gear use the same power, watts or hp.