The influence of Super League half-backs: Which partnership is on top?

When teams are riding high, on a run of form, or 'clicking', there are two players on the field that get looked at more than most - the ones starting at No 6 and No 7.Indeed, they are just as much in the spotlight when teams are in a slump, with questions arising about whether the combination between the scrum-half and stand-off is working, whether their kicking games are on point, whether they are throwing the right passes and whether other options would be better.