User blog comment:Fistful of Force/In high elo you don't need kills/@comment-1330314-20131015222109/@comment-1330314-20131016014018

Assassins that snowball that hard can carry their teams as well as an ADC by shutting down the enemy damage dealers, at least until late game hits. Rengar is especially effective at this, as his kit makes him naturally good at splitpushing and taking out priority targets. If your teammates were behind, as the fed champion you should have roamed and protected their lanes while they farmed, or put pressure on other parts of the map to relieve some on their side.

I also stand by what I say. Proper skill usage is definitely essential to contributing to a team, but itemization is just as important, and can define the outcome of a fight and thus increase the gold difference between you and your opponent.