I am not sure more people are able to demonstrate advanced verbal skills. I think more people are able to demonstrate adequate verbal skills sufficient to get a passing grade.
In the math/quantitative courses, it is often necessary to have a strong foundation in prerequisite skills or passing the course is a huge challenge. So it becomes more a situation of a student can do it or they can’t. The latter must either back up a few steps and learn whatever they missed at earlier levels or switch career goals.
In contrast, a student may lack top-notch thinking, analysis, and writing skills, but still patch together enough to squeak by because the skills do not scaffold in the same way as math.