Well, that was an hell of a feat. Boros with his strongest move made as an after effect the 2 tails of power which went behind Saitama and as far as we know they moved the athmosphere a bit like the side effects of Saitama serious punch did. Now this Psychorochi cut a small portion of earth. The point is that Psykosorochi attack imo seems stronger but also Boros put his all into his attack while this one seemed almost casual by Psyorochi. We need to go how this goes on. If it is Tatsumaki who defeats it or if Saiatama comes out.
Also we know that a normal punch of his caused some damage but nothing really serious (like vs Boros) so in any case she will probably require a serious punch too to be defeated properly (or maybe an all out Tatsumaki and that would be even better, even if the author can not expend her still this much with what comes later, let's see what happens).