At first I thought you were nuts, but after a little thinking Iíve come up with a theory to support what you say. Itís based on the fact that energy in equals energy out. Energy in is the engine, which turns a higher RPM with a lower pitch prop for the same speed. Therefore, the amount of energy in is greater with a lower pitch prop for the same speed. Energy out is put into the speed of the boat and the water. The speed of the boat is the same therefore the amount of energy to move the boat with either prop is the same. Thus, the amount of energy put into the the water is greater with a lower pitch prop. Hence, more energy left behind in the wake.
Sounds good anyways.