It amuses me that bodybuilders are so hung up on body part training. The body works as a unit in any athletic endeavor. Doing four different calf exercises or four different bicep exercises is a waste of time to increase athletic function.
Getting back to the topic at hand power cleans. You shouldn't think of it as a body part exercise but a whole body exercise. What muscle does the power clean develop? It develops the muscles that will increase that explosive sprint. It will increase your vertical leap. It will increase the muscles needed when you take that hand off and explode into the hole just made by the right guard. It will increase the muscles needed to crash into the linebacker for another yard.
I have seen to many athletes sitting in machine after machine doing body part training trying to increase their athletic potential in their sport when they could be gaining so much more with proper training. Most athletes would be way ahead of the game if they just did core gross body movements like the clean, snatch, squat, press, dips and chins. Of course there are others but just doing the listed twice to three times a week would be a great supplement to any football player, wrestler, or sprinters training program.