Jeff,
I personally haven't been tracking the TPRs too closely in RDSS, so I can't say how they perform on their own. They use the same formula described in PMTR, and use TrackMaster's adjustments for track-to-track (which would include track class) and daily track variant adjustments, so if one trusts them, I don't see why they would perform any worse (or better) than any other implementation of TPR which also uses trustworthy pars/variants.
These are the same numbers which have been around in various Sartin software since forever, just now broken out again as originally described in PMTR.
I personally feel they form only a part of the aggregate corollary rankings which are Primary Factors and Line Score (and then massaged into BL/BL). It's a shame to use only EPR, LPR (FFR) and CPR (TPR) and not use all the rest of the Compounded Factors. Though darn if some folks don't just use E/L Difference
alone for the bulk of their handicapping. Remember when minds as diverse as Bill V and Tim Y would call out a Lone wild E from a pack of otherwise slow moving animals and clean up somewhere like AQU Inner or Philly in the winter?!
The more I see how different people use these same Sartin programs, the more I'm astonished how they all can end up more-or-less winners while picking different horses, using different methods, winning and losing different races - yet enjoying a positive ROI (some indecently so). I'm gaining confidence that our higher mutuels are still not endangered.
Thanks for the kind words about RDSS, and hope your work is also going well!
yours,
Ted