I think this depends on how you read “I never saw the X.” Consider something like “I never saw the death due to accident in England that I see in Tanzania.” If you view this as the claim that no one ever dies in accidents in England, then obviously this is wrong. If you view this as the claim that death due to accident is qualitatively different in England and Tanzania, and worse in Tanzania, then it seems sensible.
I think this depends on how you read “I never saw the X.” Consider something like “I never saw the death due to accident in England that I see in Tanzania.” If you view this as the claim that no one ever dies in accidents in England, then obviously this is wrong. If you view this as the claim that death due to accident is qualitatively different in England and Tanzania, and worse in Tanzania, then it seems sensible.