My sense is that pure math courses mostly make it easier to do pure math later, and otherwise not make much of a difference. In terms of credentials, I would bet they are mostly equivalent—you can steer your career later through a master or taking jobs in your area of interest.
Statistics seems more robustly useful and transferable no matter what you do later. Statistics degrees also tend to cover the very useful parts of math as well, such as calculus and linear algebra.
My sense is that pure math courses mostly make it easier to do pure math later, and otherwise not make much of a difference. In terms of credentials, I would bet they are mostly equivalent—you can steer your career later through a master or taking jobs in your area of interest.
Statistics seems more robustly useful and transferable no matter what you do later. Statistics degrees also tend to cover the very useful parts of math as well, such as calculus and linear algebra.