I believe that’s my point. From what I understand, an incredibly broad interpretation of something like the interstate commerce clause or another enumerated power would seem necessary for such a federal ban to supersede state laws permitting abortions.

Not quite. The ruling is specifically setup to allow a federal ban against it's challenges. The wording allows several avenues, my bet is on expanding the existing federal murder charge that has plenty of case law supporting it to fetuses at the moment of conception.