It is impossible to have a equal choice. You know that. And how would it be better for a kid if the man has the unilateral choice.
This problem...isn't a binary one. It's just not. It's damn unfortunate, but only a bona fide sexual relationship contract...enforceable in a court of law...would really level the equality. It would have to read that a woman agrees to either an abortion...or take full legal and financial responsibility and remove the man from the equation. There is no other legal remedy.
So I bet that also narrows a guy's ability to find a willing woman who would sign such a contract. But...better than a sharp stick in the eye..