No, that is not correct.
Equifax is not a credit score. They are a credit reporting agency, just as Experian and TU.
The CRAs retain the data upon which any vendor of credit scores bases their scoring.
There is simply no such thing as a single "Equifax credit score."
There are dozens of companies who produce and sell credit scores, any one of which can be based on data extracted from your EQ credit file, and thus can market them as EQ scores, with no control of EQ.
Each have their own methods of calculating scores (called credit scoring algorithms)
Each company who markets their credit scores identifies the CRA from which they obtained the data for their scoring. But that is independent of the source of their data.
The most prominant vendor of credit scores is a company named Fair Isaac, who vends their credit scoring under the tradename of FICO. Fair Isaac does not base its credit scoring under only a single algorithm. They have, and selll, dozens of different algorithms, and even have different algorithms based on data that they license and extract from each of the CRAs. Even with totally identical data in you EQ, EX, and TU credit files, you will get different FICO scores.
If you purchase credit scores from any source other than a FICO-authorized score (e.g., this site), you are buying a score generated by totally different scoring algorithms,which have no correspondence to the FICO algorithms.
