[biomechanic]

The hips,shoulders and arms don't moving at the same speed at the beginning of the down swing 6-M-1 say hips,shoulders arms,
hips accelerate first and moving the fastest in the initial start of the downswing, then the shoulders are moving faster, thens arms followed by the club head, then the hips decelerate first,then shoulders then arms then club head.
you compare a cheap $40,000 dollar 6 dof electronmagnetic sensor graph,
I thinks it funnys you trying to compare a t.pi. graph to a kinetic link which uses a vicon d of system well 0ver $150,00.
good to see you have throughly done your research before presenting pathetic kinnematic chains which is missing a world on information,