Oh so these ratings are for where they are right now, ie if they're spelling, where they'll be first up. I thought they were like say the timeform ratings or the world-ranking ratings or the expert form ratings - what their peak is.

Apologies, however I think in that case you may be taking six steps when one was all that was needed. I'll be interested to see how it evolves.

PS - Leica Falcon, Xcellent etc not running against Takeover Target and Spark of Life doesn't mean the ratings shouldn't be comparable. The ratings should cut across boundaries like distance so you can compare sprinters and two milers and say - which was better, based on what they did at their distance?