The former Enyimba striker has confidently predicted that the Nigerian side will have the last laugh against the Flames on Saturday
The Nigerian side require a draw to qualify for the last round of matches, while Malawi will need an outright win to have any chance of qualifying for the next stage.
Kalu who was part of the team before injury forced him out during camping in Portugal ahead of the Africa Cup of Nations noted that there is no comparison between the two teams.
"There is no way the Super Eagles will not thrash Malawi on Saturday. I have looked at the two teams and there is nothing that will stop the Flames from losing by a wide margin," Kalu said.
"This is not a question of under-rating our opponents. I am being realistic with my prediction. Yes football is unpredictable, but Malawi cannot cause an upset.
"I have played with all the players in the Super Eagles and I know when they mean a match. I have also interacted with them before they reusmed camping and this is one match they want to win.
"The stakes are high and they know what is required of them. After the game on Saturday, they know that they will just play two matches and start preparation for the World Cup next year in Brazil.
"Nobody needs to motivate them because playing in the World Cup is enough motivation to beat Malawi." Kalu said.
The former Enyimba player revealed that he will be with the team in spirit from Turkey.
"I will be supporting them from Turkey and I know they will make me proud."