I think that's more an indication that "general fitness" is not a rigorous metric. It's fine as a vague notion of "physical ability" up to a point, and past tha

I think that's more an indication that "general fitness" is not a rigorous metric. It's fine as a vague notion of "physical ability" up to a point, and past that it loses meaning because improvements in ability are task-specific and no longer translate to other tasks.