I don't know what that wall of stats is even supposed to be telling that has anything to do with being elusive....The only way to tell who's the most elusive back in the NFL is to watch the tape not stats(maybe average yards per carry since the whole point of being elusive is avoiding tackles).
Just because Sproles only had 86 rushing touches doesn't disqualify him or anyone else for that matter(he had almost 600 yds I believe which would probably give him one of the highest averages last season), he probably had close to 200+ touches when you include Catches, Rushes,
PR/KR all stuff RBs do not just running.