Alonso is leading the championship by 11 points heading into Brazil, but many see seven of those points as undeserved due to the Hockenheim team orders incident.
Yet, Fittipaldi thinks otherwise, as he feels that Alonso will deserve the title if he manages to lock it up either this weekend or in Abu Dhabi.
"If he wins it will be because he is the best," the 63-year-old said at Interlagos.
"There have always been team games that are played," he told the Spanish sports newspaper Marca.
"I see Alonso as the best driver of the day; with the best temperament and the best able to react to problems. He will be a great triple champion in his own right," added Fittipaldi.