Vieri has been impressed by the co-hosts' performances as they progressed to the top of their group.
"They're very fast, they run all the match, and make a lot of chances for goals, " Vieri said.
Vieri's goal temporarily settled the nerves but fear set in again as Italy sat back on their slender lead.
Yet Moratti has dismissed suggestions that Inter play better when Martins is on the pitch and the 30-year-old Vieri in the stands.
BBC: SPORT | Football | African | Inter president praises Martins
Alessandro Del Pierro and Christian Vieri have both proved outstanding for their clubs and can break down even the most organised defence.
Italian striker Christian Vieri has said that South Korea are perhaps the toughest team Italy culd face in the second phase of the World Cup.
But with the likes of Ronaldo, Vieri and Alvaro Recoba at the San Siro, Mutu found opportunities hard to come by with the Italian giants.
Vieri missed Inter's victory over the Italian champions Juventus and was also absent when the Milan side thrashed Arsenal 3-0 in a Champions League encounter in September.
BBC: SPORT | Football | African | Inter president praises Martins
With 10 minutes remaining Pazzini was replaced by Christian Vieri and his first taste of the action was to fire in a free-kick from 25 yards that was deflected over.
Vieri had been linked with a move to Serie A champions Lazio - but Inter coach Marcello Lippi insisted on Wednesday that the striker would be staying on for another season.
Montella also reveals that he was once a target for current England manager Sven-Goran Eriksson who had hoped to pair him alongside Christian Vieri when he was in charge of Lazio.
Vieri, who had seen limited action in Inter's previous game, limped off the field holding his thigh after stretching for the ball near the Parma goal and colliding with the keeper Gianluigi Buffon.
Vieri said that the Italians were still tired after a long league season, which was not resolved until the final game, when three teams were still in the running for the Serie A title.
The Italian soccer federation confirmed the bad news for Azzuri fans on Wednesday evening, after Vieri, who was Italy's leading scorer in the 1998 World Cup, was forced off in a match against Parma.
Martins' hopes of securing a place in the starting eleven are restricted by the presence of Italian star Christian Vieri but the Nigerian has made sure that the towering international forward is not missed on the occasions when he is absent from the first team.
BBC: SPORT | Football | African | Inter president praises Martins
"According to the examinations carried out by doctor Andrea Ferretti as soon as the player arrived at the team's training camp at Coverciano, the muscular injury suffered by Vieri during the Inter-Parma match cannot heal in time for the player to take part in the European Championships, " the federation announced.
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