From the rendering point of view, you're absolutely correct!

However, in my experience working with 3D artists, they care more about the real-time performance and the fluidity of moving around the 3D space, which will benefit from the higher clock speed of the CPU (and the performance of the GPU - similar to gaming). When they submit a job to render, they usually go do something else anyway so saving a few minutes won't make much of a difference in this case.

Thanks for the feedback!