In some cases, no; in some cases, yes.

By the number of women who actually die of breast cancer.

Suppose, normalized for population size, 1000 women of a certain age die of breast cancer in both country A and country B. In country A, 5000 women are treated with chemo. In country B, 20000 women are treated with chemo.

Which country has the more competent doctors? I think the answer is obvious.

Hint: The USA is not country A.