The difference is that there are state laws on the books, passed by Republicans, that don't allow for those exceptions. That ban abortion after just a few weeks. That criminalize doctors provide abortions leading to people getting killed.
These are not hypotheticals. These are laws, on the books, passed by Republican legislatures. Where are the laws passed by Democrats that enact the crazy hypotheticals Republicans rail about - like abortion after birth, that Trump just tweeted about like 15 minutes ago?