In general, an A is a B in some context if you can't tell the difference within that context.
The bar might not be that high. If the little customer service chat with my bank behaves like a person, isn't it as good?
The chinese room is sort of intended as a refutation of the ideas contained in the turring test. I postulates a system that would pass a turring like test but argues that there isn't any component of that system that has 'understanding' to which the general response is that it is the combined system which 'understands'.
The argument is, that anything resembling a chinese room is such an advanced and complex system that it becomes indistinguishable from an actual conscious being.