Faulty comparison, or false equivalence, or logically sound?

The false equivalence applies to arguments, not object/ideas. There is no logic here; it is an ideological evaluation of two things: a fetus vs. a baby. How are they similar and how are they different? One side claims they are more similar than different, and the other side claims they are more different than similar. While I have seen SOME secular arguments against abortion, most of the arguments tend to rely heavily on religious ideas such as souls, "God's creations," etc. to establish a stronger similarity. Because these ideas cannot be demonstrated or proven, it comes down to ideological positions or worldviews.