I hear some people saying that the eldar shield has the advantage of preventing model loss that health does not have. However as far as I understand it, this is only partially true. DoW 3 model loss works differently than DoW 2. You only lose models once you lose a certain amount of health as a squad. In other words, before the eldar gets the shield regeneration upgrades, their shield functions almost exactly the same as health does, because you only lose models after losing a certain amount of health. It does not actually matter how much damage individual models take.
Correct me if I'm wrong.