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You just discovered that the work, kinetic energy and power are frame dependent quantities. Your result has nothing to do with the motorcicle versus plane. You just analysed the same motion from two different reference frames and found different results. If you do the same thing for the motorcycle from a reference frame moving with the wind (so the wind velocity is zero) you will find the same formula as for the airplane. Even better, consider two motorcyclists, going next o each other, as they do sometime. From the frame associated with one motorcyclist the velocity of the other is zero so the power associated with any force acting on him is zero. So the bottom line is that the work, kinetic energy, power depend on the reference frame you use to calculate them. This is a well known fact and is nothing wrong with finding different values in different frames.