CTC,

If you are trying to get at who is producing the most accurate figures, you have to remove the handicapping skill from the results and it has to be an apples to apples comparison.

You can't isolate the quality of the figures using handicappers that might have different skill levels. I could probably get better results than my grandmother using raw final times no matter what set of figures you gave her. :)

You can't compare speed figures with weight and ground loss to those without because you can't tell if the different results are because of the quality of the figures or the incremental information included in one set vs. the other.

To determine if incremental information is better you have to compare the results using the same set of figures with and without the incremental information.