Again: what kind of armor is that? An armor is designed to be flexible and/or rigid and all the damage suffered by it are mostly internal (the ceramic especially)
There is NO armor in the world that can fall piece by piece dramatically.
EDIT: except MODULAR armor, like, Gundam and tanks, and that design is useless when applied to human.
Back to more important question: what matter is the damage suffered by the wearer, certain kind of damage may not manifest until later, especially when adrenaline is involved. (hence I said sometimes an accident victim is not as fine as they show)
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