Ahead of Tottenham's visit to the Emirates, the defender insisted that the Gunners have more individual quality in their ranks than Spurs.
When asked which team is better on paper, Kolasinac responded: "Arsenal, of course!
"Having said that, both teams are very strong and boast plenty of individual players who can decide a game.
"At the end of the day, though, you have got 11 players on the pitch for each team. And, yes, there are players who can make a difference individually.
"But on Saturday the winner will be the team that stands together collectively and fights harder."
Arsene Wenger's men have struggled to maintain their dominance of Tottenham in recent years, having failed to beat them in their previous six league encounters.
But Kolasinac is relishing the challenge of his first north London derby.
"In my first few weeks here I was told that the Spurs match is the most important of the season," he said.
"No question, as a footballer you look forward to those games. That is why I am looking forward to playing in my first north London derby on Saturday."