Sorry mate, I don’t understand the point you are trying to make.Ah kinda no.
Yes they have a little more impact, both as a roaming fullback make the team about them (similar with Munster).
I honestly think GI's biggest impact was at Winger for QLD. WHY? no one watching him so he would casually make an intercept at a key moment.
Which is exactly why we should avoid this craze of making it all about the fullback. Once it is all about one player they are marked. We want to create opportunities.
The ‘craze’ of making it all about your fullback is because they touch the ball the most. You can’t base your attack on feeding a centre lots of ball and hoping they create. Having one player marked is going to happen in any position if they are your best player but it is much easier to defend a great centre than a great fullback.