When you move the body, you're trying to move it from the powerhouse, using your abdominal wall to protect your back. You're also working the body very evenly and symmetrically, making sure one side is not working harder than the other. Pilates is good for any healthy human being. Even people with injuries can benefit from it. I can't say that it's great for everyone in every scenario, but in my experience, I've only had clients feel better after doing it.
Injuries begin to cause less discomfort or go away completely.
Initially the workout is slow moving because everything is being explained to you. Eventually, once you learn the workout and you're going through the motions, it becomes aerobic. You can get a cardiovascular workout when you're on the equipment and working on an advanced level because it's more physical. You have to work towards it, but Pilates can be cardiovascular. There's a whole line of equipment in Pilates that doesn't exist in yoga, so it provides a different angle.