Argh! People! It's like articifial selection.
Powerlifters have great strength. They may or may not look good; that doesn't matter.
Bodybuilders have pretty bodies. They may or may not be strong; that doesn't matter.
The only similarity is both seek to be as big as possible while staying in their weight classes. In both groups, the biggest tend to be the strongest.
Take wolves and dogs for example. Take all the fastest wolves and breed them. Then take all the small and furry wolves and breed them. The first group becomes the greyhound, the second becomes the shitsu. You can't fault the shitsu for being slow; it wasn't the original goal in creating it!
So let's stop this craziness about powerlifters being fat or bodybuilders being week because it's unfair to both groups, and each probably doesn't really care.