Actually, there are exceedingly few countries out there where the fetus would even be given a second thought, unlike the US. But the reality is that the DA is going to go for the charges that bring clear, uncontroversial verdicts with the most extreme penalties possible. Thowing a fetus argument into it would just turn the whole trial into a big circus.
This guy's gonna get either life w/o parole or death (assuming he's guilty, of course). I think that's quite a lot of justice for the unborn baby.