For an analogy, you've got two surgeons, one who only takes cases where he is extremely confident he can operate successfully, and one who takes the cases no on

For an analogy, you've got two surgeons, one who only takes cases where he is extremely confident he can operate successfully, and one who takes the cases no one else will. The first loses 1% of his patients on the table, the second 20%. Which person is the better surgeon?