The phrase "good analog" means something that is comparable or similar to something else, in a positive way. It is used to describe a situation or object that can be used to understand or explain another situation or object. Full definition
The five best analog years are chosen from the 1949 - 2015 period. (arcus.org)
Although they fit the mould of a conventional striker much more snugly than Salah, with their searing pace, individual skill and unerring finishing technique, Torres and Suárez are perhaps better analogs for the new star of Anfield than any of the aforementioned names from the more distant past. (footballwhispers.com)
Macaques are close genetic relatives to humans, making the monkeys better analogs than other lab animals. (sciencenews.org)