Marchetti claims he is different to Buffon, but reassures fans he can do the job.
But he claims there is a distinct difference between him and the number one custodian.
"I am tranquil. Are my characteristics similar to Buffon? No. He is faster and more reactive, but I am more muscular and explosive. My characteristic is based on strength, but I think courage and understanding of your strengths are the basis for success," he told the press.
Despite learning a football culture with mid-range teams, Marchetti is confident his goalkeeping matches the standard expected in South Africa.
"I have arrived here after many difficulties, the failure at Torino, Albinoleffe too. But everything has changed. If I am part of this group it's because I have the quality.
"The stage may have changed, but I feel the faith from my team-mates."
Marchetti is expected to make his full World Cup debut against New Zealand after appearing as a substitute against Paraguay.
"They are a physical side and strong in the air. I am thinking about winning," he concluded.
Who has the best chance of winning the World Cup? Check out Castrol Football's 2010 FIFA World Cup Winner Predictor.
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