Depends the way you train. If you read works by people like Mike Mentzer and Ellington Darden, they often talked about common sense, well-balanced nutrition. This equated to basic diet guidelines for the general populace, which is completely contrary to most of what you will read about regarding nutrition for bodybuilders. The reason is their style of training, namely HIT where you typically train each body part with a single set to failure 2-3 times a week. This may equate to 20-30 mins training per week. Clearly pounding down thousands of kcals a day is not optimum on such a regime, unless fat gain is your goal. That's why they recommended modest amounts of protein. And, to be fair, strength is often associated with HIT so they were on to something.