Suarez struck twice as England were defeated 2-1 by Uruguay in Sao Paulo to leave Roy Hodgson’s side on the brink of an early World Cup exit.
He had sat out the first game after recently undergoing knee surgery but returned with great effect against England and Forlan believes his presence was the difference between the sides.
Forlan told ESPN FC: “He got three good chances. The first, he scored. The second one, he hit wide. A fit Luis would have scored that. And the third one, he scored to win the game.