There's a lot to unpack here.
When we say Superman is a role model, we don't mean that you should learn to fly and why aren't lasers coming out of your eyes, do we? What we mean is, Superman has a character independent of his powers that we could all learn from.
Victoria's Secret's main problem was that they only ever sold one size, pretty much. Their product was inaccessible to women even with very common body types.