The body adapts to specific exercise. That means that what you train for is what you get. If you want a more muscular physique, you don’t train like a marathon runner. If you play football, hockey or basketball, you can’t train like a guy from the World’s Strongest Man competition.
However, you can combine techniques from all types of training to make a great training program. For example, bodybuilding requires aesthetics and symmetry in the pursuit of muscle growth. Successful bodybuilders are much more concerned with fatiguing their muscles than with how much weight they are actually using.
Powerlifters, on the other hand, are trying to lift as much weight as possible. Although bodybuilders generally have larger muscles, many powerlifters still have impressive muscular physiques.