there is clock speed and then there is football speed. Over the years I've just seen the difference too often to deny it.
Sometime a player has both... but IMO that's an exception.
There is also the uniforms... I can't definitively say the weight and cumbersome nature of a uniform affects players differently as far as speed.... but I fully believe it does.
Then there is reaction time and quickness.... arguably the most important factors in game flow and not necessarily related to top end speed.
Not trying to defend the slower 40yd guys here..... just saying speed is complex... and the clock is merely one factor.... in a long list of factors. - JamesJM
