[SmG Phoenix]

A fed anyone can win or anyone who can play a certain champ well enough can win. But generally it's the team that wins not a single player. A single person can't 1v5 the other team if they work together. And although one person may help the rest of his team get fed while getting glides himself ultimately it is his team that wins the game not solely that person even though he was a major factor in it.

Some people can 1vs5 if they can kite and are that fed.