Analogue, in this sense, means some action or thing seen as comparable to another.

If something is analogous of, or to something, it is proportional to something else.

The proportionality describes a primary/secondary relationship. If two actions/things are entirely comparable - i.e. orthagonality approximating 0.0 - then they are not analogues, but rather equivalents.

Something may be a poor comparison to another thing, but still be an analogue - albeit, a poor analogue in comparison to some other, original, instance.