If we're doing analogies, let's do them right :) Therefore I'd argue it is more like supercharger overheating on a car. As a supercharger gets hotter from prolonged load it gets hot and warms the air entering the engine which reduces cold-air intake thus reducing horse power compared to a cooler supercharger. There is a way to solve this: by fitting a chargecooler - which is basically a cooling system for the supercharger.