Physicists and Mathematics majors can only be better than a CS grad, if they come prepped with Softwrae Development experience. A CS grad can communicate better with the code they write and most of the time assuming it's straight CS have knowledge and experience of ML that exceeds a Physics/Math major.

Anecdotally, I've worked in places where this is a major source of contention - The Data Scientists treated as talented individuals (who produce broken solutions which work for cherry picked data sets), and anyone else is just a monkey who maintains and fixes the broken code.