Yes - best against moderately complex threats in limited numbers. For reference Recent SM6 test (FTM33) shot down 1 of 2 short range ballistic missiles with 4 i

Yes - best against moderately complex threats in limited numbers. For reference Recent SM6 test (FTM33) shot down 1 of 2 short range ballistic missiles with 4 interceptors in what's described as "most complex" test so far, but "most complex" hasn't hinted at dealing with anything like counter measures. Reality is, even US missile defense also haven't been seriously stress tested.