I agree there are definitely a lot of similarities but Murphy does have more top end speed, just look at the track times. In the last decade Heritage only has one 4×100 team that would've cracked the top 10 at Murphy during the same time frame. Murphy has triple the number of kids running 12.0 or better 100 meter and sub 24.0 200 meter times during the same time frame.
Point being an elite speed team at Murphy like 2010 or 2013 is just not the same as an elite speed team at Heritage, those types of Murphy teams stand a better shot against the Tarboro and Reidsville's of the world, but it's certainly a tall task for either school year to year against the athleticism of a Reidsville or Tarboro, as it would be for many 1A and 2A schools.