Bhagwan, interesting figures you supplied, would you be able to supply the percentage of horses in each of those catergories as well so we could get an idea of how much of an advantage or disadvantage there is. For example

1500-1600

10-17 days 54% winners

what percentage of horses were in the 10-17 days ? if it was 54% then I would say there was neither advantage or disadvantage, however if it was say 40% or less then that could be considered a definite advantage. Hope you understand what I'm getting at.