Coutinho and Neymar were the players to score the goals in Brazil's 2-0 victory over Costa Rica, making progression to the Round of 16 a bit easier after an opening 1-1 draw to Switzerland.
Analysisng the 'Selecao's first two matches for 'The Sunday People', Carlos used the opportunity to praise the Barcelona midfielder.
He said: "Everyone is talking about Neymar, but the truth is that Coutinho is also a great player for Brazil. All opposition defences are concentrated on Neymar and [Coutinho] appears and decides game".
For the former full-back, he is confident of Brazil's chances in Russia, adding: "Our individual quality and our organisation makes us the team to beat".