They weren't exactly the same, they were the manufacturers own model shafts, so all standard stiffs, which all had similar weights, torque, kick points and launch characteristics. Not identical, but not different enough to alter the results.
The Ping, that's not scientific, its just its a bit bigger and therefore designed slightly more to help the average guy out, and the average guy tends to miss right. So draw bias tends to be a feature even if they don't shout about it
Don't rate them. Its me that hits it off line, if I owned a multi million pound Swing Robot I would use dispersion circles more. I have used it my latest High Launch iron video though.
