Problem is that most BB'ers think of cleans/Hi-pulls as PL'ing or Olympic super heavy training, for sets of 3's, etc, as example. Even regular cleans/Hi-pulls off the floor are judged this way. If a BB'ing style of training was adopted, for example 3X8-12 reps, than some very favorable results could be gained in the way of growth. Some exercises are labeled one way or another without just cause.
Wooo referring to the amount of energy involve in power cleans (hanging cleans, power rack/box cleans, etc) is very close to the truth. Those Big Boy exercises do require more energy because of the many muscles involved for that exercise. They can be hard work. Like the Squat, DL. etc. But those are the bases of fast muscle/strength growth. Putting more demands on the body with those super compound movements is what makes them so rewarding. That is how the body, considering the trainee has a good diet and is giving the body enought recovery time, adapts and grows.
If the Power Clean seems to be a potentional problem than it might be suggest that the Hi-pull be used instead. Though either of these execises are not for everyone. Catching the weight in the clean can produce problems for some, if too much weight is used as a regular part of heavy training. As a quick lift, the tensions on the body can be increased. Periodization usually works very well when compound lifting exercises are included week in, week out. I know a few Oylmpic lifter's and watched their training habits. The traps and lower back muscluar development is not to be believed. Can almost hide your fist in some of those guy's lower back development. Good Luck.