Precisely because he is talking about Ed Moses, I think James King does mean stride [length] here, as it was his long stride that allowed him to maintain the same stride pattern throughout, while his rivals had to change the pattern towards the end.
Moses was unique in that his 9ft 9in stride allowed him to take 13 steps between each hurdle compared to the normal 14. His stride may be shorter today.
http://www.telegraph.co.uk/sport/othersports/athletics/24106...His long stride meant that he tackled the gaps between the barriers with 13 rather than the conventional 14 steps -- a method that helped him amass an unprecedented sequence of 107 finals unbeaten, with Ed remaining undefeated on the track for an incredible nine years.
https://www.youtube.com/watch?v=Cmkqi7B3h0sMoses, whose trademark was a 13-step stride pattern throughout the whole of the race
http://www.athleticsweekly.com/0/admin/news/the-greatest-oly...[Re Moses' comeback] Moscrop sayeth of Moses: “He’s got the stride, which is very useful, but I cannot see him maintaining that stride over 10 hurdles.
http://masterstrack.com/moses-has-to-be/