Each breed has a hidden stat called “suitabilities. ” Certain breeds are suitable for more event types than others. These are based on realism. Through generations and frequent eventing, you can improve the suitabilities for your line of horses. For example, a Clydesdale, is suited to do driving events, whereas an Arabian is not suited. In a way, these replace the breed types being a factor in the VHR web game, but offer a lot more flexibility.