City face Ajax again on Tuesday night knowing they must win at the Etihad Stadium if they are not to crash out of the Champions League with two games to play.
Babel told the Daily Mail: "Against City in the first game you could see the perfect example of a real team effort by Ajax against a team of individuals.
"We noticed how the frustration got the better of them during the game. And we saw how the players were directing those frustrations towards each other. That is the danger of a club with so many big-name players and so many big egos.
"When the going gets tough, they are not prepared to do the hard work for each other."