thats ok,
the real crux i'm interested in is the ratings, are they are power type of ratings based on grade and finish.

There's a big difference between racing and dogs class /grade/power ratings

does'nt take much thought but in greyhounds if a dog progressed thru the grades by winning each start and was having it's next start in top grade, and then you had a dog that raced in top grade for 4 weeks and had run second each week, which dog should be on top in the power/grade ratings?