The comparison is a genuine search. Somebody deciding between two disciplines wants an honest explanation, and the studio that provides it is remembered when they choose one.
People use the word Reformer itself, and that search carries a much higher value. The audience is smaller than general pilates, arrives with the decision already made, and pays accordingly.
Back pain brings the committed. Somebody attending because their back hurts comes weekly for months rather than trying a class once, and that search is enormous.
Pre and postnatal work is a niche with real loyalty. It is searched anxiously, it requires specific training, and a studio that says which qualifications it holds is chosen over one that does not mention it.