If that is the case, and it sounds like a pretty sound argument to me, is it because some tracks have shorter straights (more favorites get boxed in on the turn or whatever)? Is it because more favorites get nobbled at some tracks? What is the reason? And if it is pure unpredictability rather than less astute punters can we really take any advantage from the different returns at different tracks or are we as likely to suffer the consequences of unpredictability as everyone else.