زَيْدٌ كَالْأَسَدِ
Zayd is like a lion.
It would be mistaken to infer that Zayd therefore has a lion's claws, teeth, body, and species. Omitting the respect removes a verbal restriction, not the real distinctions between a human and a lion.
In an appropriate context, courage and steadfastness become salient while irrelevant zoological features are excluded. Without this distinction, the term “generality” would be taken too literally and the figurative point would disappear.