I don't know exactly if the anatomy of trans women is similar to that of non-trans women. I'm ignorant about this. However, if there are equal conditions, it can happen in trances. If there are no equal conditions, I think it can be opened to a separate category. Why shouldn't there be an extra category of trans women or trans men next to men and women?
Current science actually shows that trans women perform worse than cis women in several categories and identical in others. Which correlates with the fact that in the 20 years that trans women have been allowed to compete in the olympics, not a single one has made it there. It was a small study and needs to be expanded upon, but is still better evidence than what any of the reactionary bans have.