Not sure about that. My late father was an engineer who worked his whole life in air conditioning, ventilation and air handling once explained to me that "handling" air was similar to "handling" water. If air hits a wall, it splashes in every direction, the same way as water would, but if you redirect air evenly, the overall effect on flow will increase, the same as with water. This is what the power plate does inside the intake manifold. Also, increasing flow means that the engine ingests more air, this combined with the right amount of fuel added = more power. Simple as that.
Claude