Had to resurrect this one briefly to attach a chart. Grantes this is only information for a hand full of flamethrowers. Still hoping root finds his study. Notice the most disadvantaged from a size standpoint (linciculm) makes up for it with the fastest time from forward momentum to front foot strike. Also he has a good stride length. Could this speed down the hill be the key to his ability to make up for his size? While I don't consider this chart definitive evidence I would say it bolsters my theory at least. Note that leg lift to forward momentum varies widely. Even stride length is a bit inconsistent. But the one area the fastest throwers seem to have in common is speed from forward momentum to ffs. Hopefully I attached this correctly!