First of all, as I\'ve said here before,since the entire concept of speed figures is based on using horses figure histories to create later figures, it\'s a sign of strength to have horses running back to or close to past figures-- UNLESS you are playing around WITHIN the race, with the relationships between horses, which would be self defeating as a practical matter. If you have a race where several horses pair up their most recent figure (for example), it\'s not only an indication that day\'s figures are right, but that the past figures are as well.
Secondly, I\'m not at all surprised that there are differences with Ragozin, since their assumptions will often create a \"correct\" figure that\'s different than ours. Those guys are about process, and rules-- as has been discussed here a lot in years past, if their process ended up with the Fla Derby going in a 20, they would have given the horses a 20. In their world there are no sliding variants without extreme weather changes (see \"Changing Track Speeds\" in the Archive Section of this site), no splits between one and two turn races, no track speed changes due to track maintenance (the famous Wood Memorial brouhaha from a few years ago).
The same thing applies to differences with other figure makers who use a different process, whether it involves pars, doesn\'t involve ground and weight, whatever. I should HOPE there are differences, and so should bettors who use our data.