The quarter horse thing is something I cannot handicap to save my life. The extent of my knowledge with them is bet the one slot or the farthest outside to avoid traffic. That being said I am pretty sure I have bet all of three quarter horse races ever, all three while working at Rillito
Harness racing has really allowed me to get some insight into race flow and positioning with t breds, but I am not surprised. It is a completely different game, especially when you go from a mile track to the half mile with the circus that is the passing lane.