In all methods studied, the projection method to determine the expected time of a race is key to the process of calculating a variant. The systems that interpret the horses' times to project the expected times or figures (Beyers, TimeformUS, T-Graph) are taking into account which are the most representative of a horse's past races to get this and take into account the various factors involved in weighing the importance of these races. The totally computer generated systems (Brisnet, Equibase) are simply averaging the horses past races without regard to human interpretation of which races are most representative of a horses' ability to give more weight to.

While the methods that are completely computer generated without human intervention are less prone to human error, IMO, the systems that take into account which past races are most representative and weigh them accordingly including, T-Graph, produce more accurate projections and ultimately, more accurate final figures.