It is not a true fico but On my experience it has been farirlly close to the actual score. Give or take 5 to 10 points.
Generally, my fako scores have been lower than my FICO scores. One trend that seems to hold up - if the fako goes down or up, so does the FICO.
Mine are not close at all for EQ. PG has my score as a 594 EQ FICO is 678. EX FAKO is 595 and EX Beacon is 639. TU is very close FAKO 611 FICO is 620