Having worked extensively in HK and being able to compile many studies of the racing product, one such study was on horses working out on their own or in pairs (time based) in the vast majority of cases these horses INHERENTLY have a "normal" probability distribution (which one would expect or be very likely) introduce these "normal" horses to real competition (Class Ladder) and he has a "Different" distribution, the difference in those two distributions is almost entirely due to the physical artifacts of the Class Ladder and some other racing conditions , and NOT due to the talent component of the Horse.

Further studies confirmed that Barriers / Racing style produced a very distinct range of Distributions .... so in the wash up of all this mumbo jumbo is that Barrier / Racing styles might not produce absolute differences but they do hold the key in being able to provide a very good "performance" distribution