"Perfect analogy" refers to a comparison between two things that is extremely accurate and helps explain or understand one thing in terms of another thing. Full definition
Sadly, the fact that the villains in this movie destroy the world by using too much magic seems like too perfect an analogy for what happened to Jones when he tries to put too much on the screen. (theyoungfolks.com)
Those are not perfect analogies by any means, but you get the idea. (lawyerist.com)
But why should we not assume, in accordance with the latest scientific view of Mankind in a state of anthropogenesis, (And, it may be added, in perfect analogy with the mystery of the first Christmas which (as everyone agrees) could only have happened between Heaven and an Earth which was prepared, socially, politically and psychologically, to receive Jesus.) (religion-online.org)