Super explosive people will get very little out of it. Here's why; the more explosive you are the more speed you impart to the barbell right from the start. The body knows that when it nears the end of the range of motion it must decelerate to avoid a shock to the joint, so it's an instinct to slow down. The more speed you can produce early in the range of motion, the sooner you need to decelerate. So if you are super explosive you are spending a lot more time learningto decelerate.
Furthermore someone who is super explosive doesn't need to spend more time building power; he would be much better served focusing on his lagging areas, either strength or size for example.
People who are ectomorphs with very little muscle mass will not get a lot out of it either, hence my comment about the 315lbs bench press minimum (and 425lbs squat minimum).
People who are not good at being explosive are actually those who will benefit the most from dynamic effort work since it addresses a weakness. But before doing dynamic work with the barbell they need to build stellar technique and practice explosion with easier means like jumps and throws