Imallin,
Making decisions SOLELY on performance figures may not be the best approach.Allan Jerkens,for one, scoffs at such stuff.When a horse is doing good, holding his flesh/energy,you race him, when not, you back off.You go off the horse for the most part.Aside from the quartercrack of Big Brown, Tricky just went off of BB\'s actions from his allowance win at GP thru the Belmont. What did the performance figs tell when BB whistled in the Fla Derby, Kentucky Derby and the Preakness off short spacing?
Of course, there are cases when a horse is doing very well and just throws a clunker.Sometimes it is because of racing rigors, but the horse did not present being tired or over the top and the trainer is at a loss to figure out what happened.
The idea that less is better,in all cases, is debatable.
Mike