Forlan is regarded as Atletico's biggest threat to Inter on Friday.
He said: "Inter are a team that has strong players. But the European Super Cup is won over just one game and we'll try to take our chances.
"I hope Atletico win: it would be fantastic for us. I have seen Inter play against Roma on Saturday night and I noted that they have the same base as last season.
"Inter work very well on a collective and individual level. They are a spectacular and complete team. They deserved to win the Champions League."
Finally, Forlan was asked about rumours linking him with a move to Inter earlier this summer.
"I have always said that they were only rumours. No offer arrived. I have another three years on my contract and I am very happy at Atletico Madrid."