Most of Walshes are uncontested possessions that are not just slammed on the boot for a clearance.Murphy's turnovers stand out more because more often then not they're outside possessions.
Walsh, Curnow, Kennedy and to a lesser extend Cripps get the ball in congestion and slam it on the boot for a clearance / to gain meters, Murphy's had a lot of ball on the wing this year where he's attempted to pinpoint a pass going forward, and directed it straight to the opposition player.